Widely used: Suitable for 3D printers, milling machines, drilling machines, gear shapers, hobbing machines, or other mechanical transmission applications : please us and we will do our best to provide assistance Aluminum: The timing belt pulley is aluminum, which is and Easy installation: The timing belt pulley comes with screws on the side and comes packaged with an wrench Smooth and: tooth pitches, not prone to slipping, resulting in smooth and efficient, Manufacturer: sodeber