DUO Plastic #25 Sprockets are compatible with the REV DUO System and fit on a 5mm hex shaft. The hex shaft interface completely eliminates the need for expensive hubs or using potentially unreliable set screws. Sprockets 15 tooth and larger have a hole pattern on an 8mm pitch enabling easy mounting directly to DUO Extrusion, DUO Brackets, and other 8mm pitch systems. All DUO motion products have a uniform 15mm width to make quick design swaps fast and easy. Specifications Chain Size: #25 Material: Acetal (Delrin/POM) Thickness: 15mm Hole Diameter: M3 clearance Hole Spacing: 8mm Documentation DUO Build System Guide Sprocket Basics Guide Product Options SKU PRODUCT NAME CAD & DRAWINGS REV-41-1338-PK4 10 Tooth Plastic #25 Sprocket - 4 Pack STEP FILE ONSHAPE DRAWING REV-41-1339-PK4 15 Tooth Plastic #25 Sprocket - 4 Pack STEP FILE ONSHAPE DRAWING REV-41-1340-PK4 20 Tooth Plastic #25 Sprocket - 4 Pack STEP FILE ONSHAPE DRAWING REV-41-1342-PK4 26 Tooth Plastic #25 Sprocket - 4 Pack STEP FILE ONSHAPE DRAWING REV-41-1343-PK2 40 Tooth Plastic #25 Sprocket - 4 Pack STEP FILE ONSHAPE DRAWING REV-41-1341-PK2 54 Tooth Plastic #25 Sprocket - 4 Pack STEP FILE ONSHAPE DRAWING