GT2 Idler Timing Pulley 16-tooth 20-Teeth with 3/5mm Bore with Bearings For 3D Printer Parts Timing Belt 6/10mm

GT2 Idler Timing Pulley 16-tooth 20-Teeth with 3/5mm Bore with Bearings For 3D Printer Parts Timing Belt 6/10mm

AliExpress