GT2 Timing Belt Pulley 60 Tooth 60T 5mm Bore For RepRap Prusa Mendel 3D PrinterSpecifications:Material: AluminumSizeTooth number: 60TTooth pitch: 0.2cmHole diameter: 0.5cmFlange: DoubleTooth width: 0.9cmSuitable For: PrinterFeatures:Pitch short、 a more uniform transmissionIt gives better smoothness and accuracy of positioning、 resulting in better printing qualityPacking included:1 x GT2 Aluminum Pulley with screws