diff --git a/pcie.scad b/pcie.scad
index 7d4dc9c..6d11c6c 100644
--- a/pcie.scad
+++ b/pcie.scad
@@ -1,23 +1,8 @@
-// PCIe Extension Riser Board Holder
-// Configurable 3D printable holder with M3 mounting holes
+// 2020 Extrusion Insert
+// Configurable 3D printable insert for 2020 aluminum extrusion
 
-// === Design Parameters ===
-thickness = 3;           // Thickness of the holder (configurable)
-hole_diameter = 2.8;     // M3 hole diameter (slightly smaller for 3D printing)
-margin_x = 8;            // Margin on each side of the holes
-margin_y = 6;            // Margin above and below the holes (currently unused)
-holder_width = 6;       // Width of the rectangular plane
-
-// === Hole Spacing Parameters ===
-first_hole_spacing = 20.5;   // Distance from first to second hole
-second_hole_spacing = 20.5;  // Distance from second to third hole
-third_hole_spacing = 22;     // Distance from third to fourth hole
-
-// === Technical Parameters ===
-cylinder_overlap = 0.1;      // Small overlap to ensure clean boolean operations
-cylinder_resolution = 32;    // Number of facets for cylinders (higher = smoother)
-preview_cylinder_height = 2; // Height of preview cylinders
-preview_cylinder_diameter = 3; // Diameter of preview cylinders
+// Import PCIe holder functionality
+include <holder.scad>;
 
 // === 2020 Extrusion Insert Parameters ===
 extrusion_2020_outer = 20;      // 2020 extrusion outer dimension
@@ -124,74 +109,9 @@ module extrusion_2020_insert_3d(
         );
 }
 
-// === Main Function ===
-module pcie_riser_holder(
-    thickness = 3,
-    hole_diameter = 2.8,
-    margin_x = 8,
-    holder_width = 12,
-    first_spacing = 20.5,
-    second_spacing = 20.5,
-    third_spacing = 22,
-    show_preview_holes = false
-) {
-    // Calculate hole positions
-    hole_position_1 = 0;
-    hole_position_2 = hole_position_1 + first_spacing;
-    hole_position_3 = hole_position_2 + second_spacing;
-    hole_position_4 = hole_position_3 + third_spacing;
-    
-    hole_positions = [
-        hole_position_1,
-        hole_position_2,
-        hole_position_3,
-        hole_position_4
-    ];
-    
-    // Calculate total dimensions
-    total_length = hole_position_4 + (margin_x * 2);
-    total_width = holder_width;
-    
-    // Main holder body
-    difference() {
-        // Create the main rectangular plane
-        cube([total_length, total_width, thickness]);
-        
-        // Create M3 holes
-        for (i = [0 : len(hole_positions) - 1]) {
-            translate([margin_x + hole_positions[i], total_width/2, -cylinder_overlap])
-                cylinder(
-                    h = thickness + (cylinder_overlap * 2), 
-                    d = hole_diameter, 
-                    $fn = cylinder_resolution
-                );
-        }
-    }
-    
-    // Optional preview holes for reference
-    if (show_preview_holes) {
-        for (i = [0 : len(hole_positions) - 1]) {
-            translate([margin_x + hole_positions[i], total_width/2, thickness])
-                cylinder(
-                    h = preview_cylinder_height, 
-                    d = preview_cylinder_diameter, 
-                    $fn = cylinder_resolution
-                );
-        }
-    }
-    
-    // Display specifications
-    echo("=== PCIe Riser Holder Specifications ===");
-    echo(str("Total dimensions: ", total_length, "mm x ", total_width, "mm x ", thickness, "mm"));
-    echo(str("Hole spacing: ", first_spacing, "mm, ", second_spacing, "mm, ", third_spacing, "mm"));
-    echo(str("Hole positions: ", hole_positions));
-    echo(str("Hole diameter: ", hole_diameter, "mm (for M3 bolts)"));
-    echo("=== End Specifications ===");
-}
-
 // === Usage Examples ===
 
-// Generate the PCIe riser holder
+// Generate the PCIe riser holder using imported functionality
 pcie_riser_holder(
     thickness = thickness,
     hole_diameter = hole_diameter,