#mm bore

WINSINN GT2 Pulley 20 Teeth 8mm bore 6mm Width 20T Timing Belt Pulley Wheel Aluminum for 3D Printer

WINSINN 3D Printer Drive Gear, Compatible with Prusa i3 Ender 3 Anet A8 MK8 Hotend Extruder Feed - 40 Tooth 5mm Bore Stainless Steel

Belt Pulley, 5pcs 6mm Width 2GT Aluminum Synchronous Timing Belt Pulley Gear 20 Teeth for 3D Printer Black Timing Pulley GT2

WINSINN GT2 Pulley 20 Teeth 5mm bore 6mm Width 20T Timing Belt Pulley Wheel Aluminum for 3D Printer