20Teeth 2GT Idler Pulley Bore 3/4/5/6/8mm With Bearing Belt Width 6/9/10/15mm Timing Pulley GT2 20T 3D Printer Synchronou Idler

20Teeth 2GT Idler Pulley Bore 3/4/5/6/8mm With Bearing Belt Width 6/9/10/15mm Timing Pulley GT2 20T 3D Printer Synchronou Idler

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