GT2 synchronous wheel is made of quality fiber reinforeced rubber, durable and flexible soft transmission,: buffer, damping capacity, low noise. 2pcs 2GT 20 tooth synchronous wheel widely used in 3D printer, milling machine, speed shaper, drilling machine, CNC motor lathe, etc. slbrillre GT2 20 tooth Synchronous pulley providing smooth transition between belt, good performance for 3D printers High transmission efficiency, energy saving effect Description Bore synchronous wheel is made of aluminum alloy, surface oxidation treatment. Boron Diameter: 5mm.Widely used in milling machine, gear shaper, drilling machine, hobbing machine or other machinery transmission occasions. GT2 timing belt pulley system particularly suitable for linear movement and positioning. Feature Bore synchronous wheel -Color: As shown. -Material: rubber. -Size: Hole diameter: 5mm / 0.196. Timing belt length: 200mm / 7.87inch. Timing Belt Width: 6 mm / 0.236inch. Number of teeth: 20 and 60T. Package Including 1*2GT 20 Tooth Synchronous Bore Gear 1*2GT 60 Tooth Synchronous Bore Gear 1 * Length 200 mm Width 6 mm Belt