Features:
1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information;
2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.
3.Made of aluminum, Groove step pulley, long time and durable use.
4.31MM diameter,8mm aperture,15MM Thickness.
5.Suitable for 3-5MM PU round belt.
6.Commonly used for DIY small drilling machine, milling machine, small unpowered spindle of machine tool.

Specifications:
Material:Aluminum Alloy
Color:Silver
Brand name:BQLZR
Diameter:31MM/1.22 Inch
Aperture:8MM/0.31 Inch
Thinkness:15MM/0.59 Inch
Step Dia:16MM/0.63 Inch
Overall Size:31x15x8MM/1.22x0.59x0.31 Inch ( OD x T x ID )
Weight:15g

Package include:
1x Groove Step Pulley