TheseJorgensen drop-forged bar clamps are great for professional tradespeople, carpenters, cabinetmakers, woodworkers, metalworkers, & hobbyists seeking a bar clamp with superior rust resistance, look no further than the Jorgensen drop-forged bar clamp. The drop-forged steel bar is chrome plated to ward off rust longer, &a heat-treated acme screw provides increased durability.