Manufacturer Id: 6502406 Manufacturer Model: CP850EX Manufacturer Name: Donnmar Ent., Inc. Constructed from 17-4 stainless steel with replaceable tungsten-carbide line cutters. They have integrally molded rubber handles that are warm to the touch and provide a soft, slip-proof grip either wet or dry. For smooth operation, they feature a non-corrosive electroless nickel plated brass sleeve bearing for pivot point. The jaws are alloyed with titanium carbide for an excellent grip without damaging the hook. The CP850Ex features an internally mounted return spring and "channel-cut" grooves machined into the jaws in addition to the titanium-carbide gripping surface.