Owfeel XL Type Aluminum Timing Belt Pulley 10 Teeth 6.35mm Bore M4 Top Screws 2PCS Designed with double flange, admits synchronizing shaft rotations Widely used in milling machine, gear shaper, drilling machine, CNC engine lathe, hobbing machine or other machinery transmission occasions It is very useful in high-reduction drives in the occasion that need to improve the wrap-around capabilities of belts 6.35mm 10 teeth, Tooth width: 11 mm. Owfeel is registered trademarks,has been filed in the Amazon,and only authorized this exclusive shop to sell,if find out follow-sell or counterfeit,it is infringement,we will pursue legal responsibility.