Features: These clamps are of exceptionally robust construction featuring cast and machined handles and bases. Clamps are designed with a low plunger height and with the mechanism guarded within the base to avoid finger traps. Specification: The bases of all models are machined S.G. iron castings. The plungers are of steel, and their precision ground diameter runs in a close-tolerance hole in the base casting. Handle movement 185. All axles are of hardened steel and run in either the S.G. iron of the handle, or in the close-toleranced holes of hardened parts. All models are supplied with a steel set screw.