Note: The color of the item may vary slightly due to photography and your own computer. Feature: Made of aluminium alloy, shaft diameter is 4mm to 6mm. Suitable for 3D printer, engraving machine, stepper motor, encoder, etc. Used for connecting the stepper motor and ball screw. Specification: Material: Aluminium Alloy Color: Silver Shaft: 4 x 6mm/0.16 x 0.24 inch Size: 19 x 25mm/0.75 x 0.98 inch (Dia x L) Weight: 32g Package Include: 2 x Flexible Shaft Couplings
