2pcs Prusa i3 MK3/MK2 3mm Bore X/Y Axis Timing Belt Aluminum Anodized Flat Idler Roller Bearing Pulley Replacing 623h Bearings

2pcs Prusa i3 MK3/MK2 3mm Bore X/Y Axis Timing Belt Aluminum Anodized Flat Idler Roller Bearing Pulley Replacing 623h Bearings

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