Product Description Mellow 3D Printer GT2 Open Timing Belt Pulley 20 teeth Bore 5mm for Width 6mm/9mm/10mm/12mm GT2 synchronous belt 2GT 20teeth 20T . Brand Name:MellowItem Type:PulleyModel Number:20teechMaterial:Aluminum AlloyNumber of Teeth:20Type:Timing pulleyStandard belt width:6mm/9mm/10mm/12mmBore:5mmscrew hole:2*M4Color:silver |