RuiLing 2PCS Shaft Coupler with 1PC M4 Mini Hex Wrench Aluminium Alloy CNC Stepper Motor Encoders Engraving Machine Z Axis Flexible Shaft Coupling 6-8mm D19xL25 3D Printer Accessories
- Material: Made of good quality aluminum alloy, integrated molding, resistant to oil, rust and corrosion..
- Bottom Shaft Diameter: 8mm/ 0.31in Mounting Screws: 4mm/ 0.16in.
- Zero clearance transfer motion, exactly the same clockwise and counterclockwise rotary characteristics..
- Package includes: 2pcs 3D Printer Shaft Coupler 6-8mm + 1pc M4 Mini Hex Wrench.