"DC Varibore Collets have the same accuracy specification as spring collets whilst maintaining a gripping range of +\/- 0.5mm. Supplied with either smooth or serrated gripping surface. Serrated collets are ideal for aggressive first operation gripping of rough bar work. Vulcanized rubber between the hardened steel collet segments provides excellent protection against coolant and chip ingress. Counter boring and special profile shapes are available upon request."