16T 20T 2GT 20 Teeth Timing Pulley 16 Teeth Bore 3 4 5 6mm Width 6/10/15mm 2M Wheel Synchronous 20Teeth 3D Printer CNC Idle Gear

16T 20T 2GT 20 Teeth Timing Pulley 16 Teeth Bore 3 4 5 6mm Width 6/10/15mm 2M Wheel Synchronous 20Teeth 3D Printer CNC Idle Gear

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