WINSINN Aluminum 2GT GT2 Synchronous Wheel 16 Teeth Bore 5mm 16T Timing Pulley For 3D Printer Width 10mm Belt RepRap Bowden Prusa I3 Mendel Makerbot Kossel Delta (Pack of 5Pcs)

GT2 Synchronous Wheel, with Screw, Can be Fixed 16 Teeth 5mm Bore Aluminum GT2 Timing Belt Pulley For GT2 10mm Width Belt, Include Allen wrench, Easy to install High Quality Aluminum, Excellently Machined, Finished Smoothly Made by WINSINN