Eclipse Professional Tools Spear & Jackson E20-12 Heavy Duty G Clamp, Blue, 12-Inch

Average clamping force of 300 - 800 kg 660 - 1760 lbs. Guaranteed unbreakable malleable iron frame with a fast action twin start rolled acme thread. The steel swivel shoe applies an even pressure even on angled surfaces, whilst the tommy bar will bend before the frame can become over-stressed.