Befenybay 2PCS 5mm to 8mm Flexible Shaft Coupling 25mm Length 20mm Diameter for Stepper Motor Coupler Aluminum Alloy for 3D Printer CNC Machine (5x8mm) D20 L25 5-8mm cocoon 2 field angle

2 field angle

and the needle is better 15 degrees to the skin

- NOT compatible with other models TV Box

Model: D-Z73

Befenybay 2PCS 5mm to 8mm Flexible Shaft Coupling 25mm Length 20mm Diameter for Stepper Motor Coupler Aluminum Alloy for 3D Printer CNC Machine (5x8mm) D20 L25 5-8mm cocoon 2 field angleBefenybay 2PCS 5mm to 8mm Flexible Shaft Coupling 25mm Length 20mm Diameter for Stepper Motor Coupler Aluminum Alloy for 3D Printer CNC Machine (5x8mm) Size : L25xD20mm 5mm to 8mm Color : Silver Material: Aluminum Alloy High Quality: Made of aluminium alloy material, light, anti oxidant, and anti corrosive, delicate CNC cut with outstanding appearance, high precision fine workmanship, long service life Function: Used for connecting the driving shaft