High quality 5pcs Timing Belt Pulley GT2 18 Teeth Alumium Bore 6.35mm fit for 2GT Belt Width 6mm GT2 Timing pulley Features: The GT2 pulley with 18 teeth or grooves is one of the best choices for 3d printer construction. Compared with the T2.5 or MXL timing pulley, the GT2 pulley tooth profile is anti-backlash. Why? The rounded teeth of this tooth and belt are engaged together longer providing a smoother transition between teeth. (Fit for reprap, Prusa, MendelMax) 18Teeth GT2 Timing Pulley Specs: Pitch:2mm Teeth Number :18teeth Flange:double Material:Aluminium Alloy Fixed mode: 2* M3 Bore of Timing pulley:6.35mm Teeth width:7mm Fit for Width of timing belt :6mm Total width:14mmPackage List:5pcs x 18Teeth GT2 Aluminum Pulley 10pcs x M3 setscrews 1 x Allen KeyItem specifics:Material: AlloyModel number: GT2 18Teeth for 6mm BeltType: Timing