10pcs GT2 Timing Pulley 16 20 Tooth 2GT Pulley Bore 5 6.35 8mm Belt Width 6/10mm Synchronous Wheels Gear 3D Printer Parts

10pcs GT2 Timing Pulley 16 20 Tooth 2GT Pulley Bore 5 6.35 8mm Belt Width 6/10mm Synchronous Wheels Gear 3D Printer Parts

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