Self extinguishing cables release low quantities of toxic & corrosive smokes and gases for optical or electrical applications. It comprises a self-extinguishing coating, a polymer base including from 30 to 60 parts of a thermoplastic polyester & from 40 to 70 parts of a siliconepolyimide polymer, at least 0.5 parts of an anti-hydrolysis agent of the thermoplastic polyester and at least 0.25 parts of a selected antioxidant agent per each 100 parts by weight of the polymer base.
Self feeding drill primers use an integral pneumatic or hydraulic cylinder with a driven precision spindle. It provides self feeding and mechanical rotation. It allows simultaneous feed automation for one or many drills.