Specification: end mill Material: Element Six Single Crystal Diamond, South African Natural Diamond Tool bar size: �¦3â??�¦20 Tool holder material: tungsten steel Per second: 5000-100000r/min Feed: 1500-5000mm/min Cutting depth: 0.05-0.2mm Processing materials: aluminum, copper, plastic, resin, etc. Features: good finish, high cost performance, long life