diff --git a/RhSolutions.AddIn/AddIn/RhSolutionsAddIn.cs b/RhSolutions.AddIn/AddIn/RhSolutionsAddIn.cs
index a7f6796..38cea15 100644
--- a/RhSolutions.AddIn/AddIn/RhSolutionsAddIn.cs
+++ b/RhSolutions.AddIn/AddIn/RhSolutionsAddIn.cs
@@ -25,7 +25,6 @@ public sealed class RhSolutionsAddIn : IExcelAddIn
             .AddSingleton<IAddInConfiguration, AddInConfiguration>()
             .AddSingleton<IDatabaseClient, DatabaseClient>()
             .AddSingleton<ICurrencyClient, CurrencyClient>()
-            .AddSingleton<IFittingsCalculator, SleevesCalculator>()
             .AddTransient<IFileDialog, FileDialog>();
 
         Services.AddSingleton<WriterFactory>();
@@ -42,6 +41,12 @@ public sealed class RhSolutionsAddIn : IExcelAddIn
         Services.AddTransient<GuessReader>()
             .AddTransient<IReader, GuessReader>(s => s.GetService<GuessReader>());
 
+        Services.AddSingleton<FittingsCalculatorFactory>();
+        Services.AddTransient<CouplingsCalculator>()
+            .AddTransient<IFittingsCalculator, CouplingsCalculator>(s => s.GetService<CouplingsCalculator>());
+        Services.AddTransient<SleevesCalculator>()
+            .AddTransient<IFittingsCalculator, SleevesCalculator>(s => s.GetService<SleevesCalculator>());
+
         Services.AddSingleton<ToolFactory>();
 
         ServiceProvider = Services.BuildServiceProvider();
diff --git a/RhSolutions.AddIn/Controllers/RibbonController.cs b/RhSolutions.AddIn/Controllers/RibbonController.cs
index 6d234e8..deb56b0 100644
--- a/RhSolutions.AddIn/Controllers/RibbonController.cs
+++ b/RhSolutions.AddIn/Controllers/RibbonController.cs
@@ -29,7 +29,8 @@ public class RibbonController : ExcelRibbon
                 <button id='convert' getEnabled='GetConvertEnabled' label='Актуализировать' size='normal' imageMso='FileUpdate' onAction='OnToolPressed'/> 
                 <button id='merge' label='Объединить' size='normal' imageMso='Copy' onAction='OnToolPressed'/> 
                 <button id='guess' getEnabled='GetGuessEnabled' label='Найти и экспортировать' size='normal' imageMso='ControlWizards' onAction='OnToolPressed'/>
-                <button id='fillsleeves' getEnabled='GetSleevesEnabled' label='Подобрать гильзы' size='normal' imageMso='CreateQueryFromWizard' onAction='OnToolPressed'/>
+                <button id='fillsleeves' getEnabled='GetFittingsCalcEnabled' label='Подобрать гильзы' size='normal' imageMso='CreateQueryFromWizard' onAction='OnToolPressed'/>
+                <button id='fillcouplings' getEnabled='GetFittingsCalcEnabled' label='Подобрать муфты' size='normal' imageMso='CreateQueryFromWizard' onAction='OnToolPressed'/>
                 <button id='dxfexport' getEnabled='GetDxfEnabled' label='Экспортировать в DXF' size='normal' imageMso='ExportExcel' onAction='OnToolPressed'/>
             </group>
             <group id='rausettings' getLabel='GetVersionLabel'>
@@ -85,7 +86,7 @@ public class RibbonController : ExcelRibbon
 
     public bool GetConvertEnabled(IRibbonControl control) => _workbookIsValid;
     public bool GetDxfEnabled(IRibbonControl control) => _workbookIsValid;
-    public bool GetSleevesEnabled(IRibbonControl control) => _workbookIsValid;
+    public bool GetFittingsCalcEnabled(IRibbonControl control) => _workbookIsValid;
     public bool GetGuessEnabled(IRibbonControl control) => RhSolutionsAddIn.Excel.ActiveWorkbook != null && !_workbookIsValid;
 
     public bool GetExportEnabled(IRibbonControl control)
diff --git a/RhSolutions.AddIn/Services/CouplingsCalculator.cs b/RhSolutions.AddIn/Services/CouplingsCalculator.cs
index 9ff4a98..d32e026 100644
--- a/RhSolutions.AddIn/Services/CouplingsCalculator.cs
+++ b/RhSolutions.AddIn/Services/CouplingsCalculator.cs
@@ -1,9 +1,67 @@
-namespace RhSolutions.Services;
+using System.Text.RegularExpressions;
+
+namespace RhSolutions.Services;
 
 public class CouplingsCalculator : IFittingsCalculator
 {
+    private static readonly string pattern = 
+        @"(^|\W)труба.*(?'Diameter'16|20|25|32|40|50|63).*(отрезки|бухт[ае])\D*(?'Length'\d{1,3})(\D|$)";
+
     public Dictionary<Product, double> Calculate(Dictionary<Product, double> products)
     {
-        throw new NotImplementedException();
+        Dictionary<string, double> result = new()
+        {
+            ["16"] = 0,
+            ["20"] = 0,
+            ["25"] = 0,
+            ["32"] = 0,
+            ["40"] = 0,
+            ["50"] = 0,
+            ["63"] = 0,
+        };
+
+        var rautitanProducts = products.Where(kvp => kvp.Key.ProductLines.Contains("RAUTITAN"));
+        Regex regex = new(pattern, RegexOptions.Multiline | RegexOptions.IgnoreCase);
+
+        foreach (var kvp in rautitanProducts)
+        {
+            var match = regex.Match(kvp.Key.Name);
+            if (match.Success)
+            {
+                string diameter = match.Groups["Diameter"].Value;
+                int packingLength = int.Parse(match.Groups["Length"].Value);
+                result[diameter] += GetCouplesCount(kvp.Value, packingLength);
+            }
+        }
+
+        return result
+            .ToDictionary(kvp =>
+        kvp.Key switch
+        {
+            "16" => new Product("11600111001"),
+            "20" => new Product("11600121001"),
+            "25" => new Product("11600131001"),
+            "32" => new Product("11600141001"),
+            "40" => new Product("11600151001"),
+            "50" => new Product("14563021001"),
+            "63" => new Product("14563031001"),
+            _ => throw new Exception($"Неизвестный диаметр {kvp.Key}")
+        }, kvp => kvp.Value);
+    }
+
+    private int GetCouplesCount(double amount, int packingLength)
+    {
+        if (amount < packingLength)
+        {
+            return 0;
+        }
+        else if (amount % packingLength == 0)
+        {
+            return (int)amount / packingLength - 1;
+        }
+        else
+        {
+            return (int)amount / packingLength;
+        }
     }
 }
diff --git a/RhSolutions.AddIn/Services/FittingsCalculatorFactory.cs b/RhSolutions.AddIn/Services/FittingsCalculatorFactory.cs
new file mode 100644
index 0000000..c8a8dbc
--- /dev/null
+++ b/RhSolutions.AddIn/Services/FittingsCalculatorFactory.cs
@@ -0,0 +1,21 @@
+namespace RhSolutions.Services;
+
+public class FittingsCalculatorFactory
+{
+    private readonly IServiceProvider _serviceProvider;
+
+    public FittingsCalculatorFactory(IServiceProvider serviceProvider)
+    {
+        _serviceProvider = serviceProvider;
+    }
+
+    public IFittingsCalculator GetFittingsCalculator(string calculatorName)
+    {
+        return calculatorName switch
+        {
+            "Sleeves" => (IFittingsCalculator)_serviceProvider.GetService(typeof(SleevesCalculator)),
+            "Couplings" => (IFittingsCalculator)_serviceProvider.GetService(typeof(CouplingsCalculator)),
+            _ => throw new ArgumentException($"Незвестный интерфейс {nameof(IFittingsCalculator)}: {calculatorName}")
+        };
+    }
+}
\ No newline at end of file
diff --git a/RhSolutions.AddIn/Tools/EventsUtil.cs b/RhSolutions.AddIn/Tools/EventsUtil.cs
index b32a849..e62de23 100644
--- a/RhSolutions.AddIn/Tools/EventsUtil.cs
+++ b/RhSolutions.AddIn/Tools/EventsUtil.cs
@@ -36,6 +36,7 @@ namespace RhSolutions.Tools
             RibbonController.RefreshControl("dxfexport");
             RibbonController.RefreshControl("guess");
             RibbonController.RefreshControl("fillsleeves");
+            RibbonController.RefreshControl("fillcouplings");
         }
 
         private static void RefreshExportButton(object sh, Range target)
diff --git a/RhSolutions.AddIn/Tools/FittingsTool.cs b/RhSolutions.AddIn/Tools/FittingsTool.cs
new file mode 100644
index 0000000..806b346
--- /dev/null
+++ b/RhSolutions.AddIn/Tools/FittingsTool.cs
@@ -0,0 +1,25 @@
+namespace RhSolutions.Tools;
+
+internal class FittingsTool : Tool
+{
+    private readonly FittingsCalculatorFactory _factory;
+    private string _calculatorName;
+
+    public FittingsTool(ReaderFactory readerFactory, WriterFactory writerFactory, FittingsCalculatorFactory calculatorFactory, string calculatorName) : base(readerFactory, writerFactory)
+    {
+        _factory = calculatorFactory;
+        _calculatorName = calculatorName;
+    }
+
+    public override void Execute()
+    {
+        Application app = RhSolutionsAddIn.Excel.Application;
+        Worksheet worksheet = app.ActiveWorkbook.ActiveSheet;
+        _reader = _readerFactory.GetReader("Excel");
+        var products = _reader.ReadProducts(new[] { worksheet });
+        var calculator = _factory.GetFittingsCalculator(_calculatorName);
+        var fittings = calculator.Calculate(products.Select(p => p.Item2).First());
+        _writer = _writerFactory.GetWriter("CurrentPrice");
+        _writer.WriteProducts(fittings);
+    }
+}
diff --git a/RhSolutions.AddIn/Tools/SleevesTool.cs b/RhSolutions.AddIn/Tools/SleevesTool.cs
deleted file mode 100644
index 26fa0ee..0000000
--- a/RhSolutions.AddIn/Tools/SleevesTool.cs
+++ /dev/null
@@ -1,22 +0,0 @@
-namespace RhSolutions.Tools;
-
-internal class SleevesTool : Tool
-{
-    private readonly IFittingsCalculator _sleevesCaluculator;
-
-    public SleevesTool(ReaderFactory readerFactory, WriterFactory writerFactory, IFittingsCalculator sleevesCaluculator) : base(readerFactory, writerFactory)
-    {
-        _sleevesCaluculator = sleevesCaluculator;
-    }
-
-    public override void Execute()
-    {
-        Application app = RhSolutionsAddIn.Excel.Application;
-        Worksheet worksheet = app.ActiveWorkbook.ActiveSheet;
-        _reader = _readerFactory.GetReader("Excel");
-        var products = _reader.ReadProducts(new[] { worksheet });
-        var sleeves = _sleevesCaluculator.Calculate(products.Select(p => p.Item2).First());
-        _writer = _writerFactory.GetWriter("CurrentPrice");
-        _writer.WriteProducts(sleeves);
-    }
-}
diff --git a/RhSolutions.AddIn/Tools/ToolFactory.cs b/RhSolutions.AddIn/Tools/ToolFactory.cs
index bdc9bf9..646fc15 100644
--- a/RhSolutions.AddIn/Tools/ToolFactory.cs
+++ b/RhSolutions.AddIn/Tools/ToolFactory.cs
@@ -4,7 +4,7 @@ internal class ToolFactory
 {
     static ReaderFactory readerFactory = RhSolutionsAddIn.ServiceProvider.GetService<ReaderFactory>();
     static WriterFactory writerFactory = RhSolutionsAddIn.ServiceProvider.GetService<WriterFactory>();
-    static IFittingsCalculator sleevesCaluculator = RhSolutionsAddIn.ServiceProvider.GetService<IFittingsCalculator>();
+    static FittingsCalculatorFactory fittingsCalculatorFactory = RhSolutionsAddIn.ServiceProvider.GetService<FittingsCalculatorFactory>();
 
     public Tool GetTool(string toolName)
     {
@@ -15,7 +15,8 @@ internal class ToolFactory
             "merge" => new MergeTool(readerFactory, writerFactory),
             "dxfexport" => new DxfTool(readerFactory, writerFactory),
             "guess" => new GuessTool(readerFactory, writerFactory),
-            "fillsleeves" => new SleevesTool(readerFactory, writerFactory, sleevesCaluculator),
+            "fillsleeves" => new FittingsTool(readerFactory, writerFactory, fittingsCalculatorFactory, "Sleeves"),
+            "fillcouplings" => new FittingsTool(readerFactory, writerFactory, fittingsCalculatorFactory, "Couplings"),
             _ => throw new Exception($"Неизвестный инструмент {toolName}"),
         };
         return tool;