Features: This pulley features a metal construction with excellent abrasion resistance Ensuring smoother prints, our precise pulley enhances your 3D printing, especially for Lab P1 series, to ensure stable prints. Ideal for 3D printing enthusiasts, engineers and professionals who require high print volumes. The pulley features a lightweight, sleek design that minimizes vibration to improve stability and accuracy during printing. Perfect for home projects, educational training and small studio 3D printing applications. Specifications: Component：Metal Size:about 15x9.5mm/0.59x0.37in Quantity：1Set/2Set For X1C/P1P/P1S 3D Printers Package Includes: 1pcs idler 2pcs gaskets or 2 idlers 4pcs gaskets note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.