Feature: 2GT Timing Belt Pulley; Fit for Reprap, for Prusa, MendelMax, 3D Printer; Circular arc Tooth Profile Tooth Space is Small, Suitable for Straight Line Driving ; GT2 pulley with 20 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 . . Timing Belt 2GT60T20T-200 Specs: Type: 2GT60T20T-200 200-2GT-6 Timing Belt: 2GT Pitch: 2mm Belt Height: 1.52mm Tooth Height: 0.76mm Material: Rubber Pitch Length: 200mm Width: 6mm Shape: Closed-loop 2GT timing belt 2GT Belt Pulley Big: Tooth Number: 60 Tooth Pitch: 2mm Hole Diameter: 8mm Flange: Double Tooth Width: 7mm Material: Aluminium Fit for Width of Timing: 6mm 2GT Belt Pulley Small: Tooth Number : 20 Tooth Pitch : 2mm Hole Diameter: 5mm Flange: Double Tooth Width: 7mm Material :Aluminium Fit for Width of Timing : 5mm Package List: 1Pc 20Teeth 1Pc 60Teeth 1Pc 200mm Closed timing belt 2Pcs Tools