Average clamping force of 300 – 800kg (660 – 1760lbs). 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. Clamping capacity 75mm (3") Frame prrof loads 1000lbs (455kg)
