3D Printer Parts GT2 Synchronous Pulley, 20T Aluminum Alloy, 5mm Inner Hole, 10mm Width, Universal For 3D Printer X/Y Axis Drive, Low Noise Anti-Skipping, High Precision Smooth Transmission Pulley, Suitable For Ender-3, CR-10 And Other Mainstream 3D Printers, Essential DIY Upgrade Parts, Durable And Deformation Resistant, Helping Makers Create High-Quality Printing Works. 
