3d printer stepper motor coupling coupler 5*8*25mm

Material: Aluminum Alloy

Diameter*Length: 14*25mm,color is Dark Blue

Screw Hole diameter: 4mm

Transfer Pore diameter: multiple specification

Pore diameter tolerance: +0.02mm

For example:the specification"5mm to 6mm" means one end is 5mm pore diameter,the other is 6mm