The Vevor bar clamps set includes two 12-inch one-handed quick-grip clamps designed for woodworking, assembly, and light metalworking tasks. Each clamp delivers up to 340 lbs of clamping force and can also convert into a spreader for added versatility. The reinforced PA6+GF30% plastic handle and 45# carbon structural steel bar are built for strength and durability. An automatic lock and one-button release make single-handed operation fast and convenient.