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uxcell 8mm to 14mm Shaft Coupling 45mm Length 32mm Diameter Coupler Aluminum Alloy Joint Motor for 3D Printer CNC Machine DIY Encoder -
uxcell 6708ZZ Deep Groove Ball Bearings 40mm x 50mm x 6mm Double Shielded Chrome Steel Z2 ABEC1 -
uxcell Compression Spring,20mm OD,2mm Wire Size,157.5mm Extended Length,90mm Free Length,Spring Steel,17.3Lbs Load Capacity,Grey 2pcs