Eclipse E20-6 Heavy Duty G-Clamp 6 Inch / 150mm  The Eclipse E20-6 is a heavy-duty g clamp with a powerful clamping force of 636kg (1400lbs). It is guaranteed unbreakable, made from a 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. This clamp is ideal for many clamping applications in many trades. Features:   Acme thread  Steel swivel shoe  Guaranteed unbreakable  Malleable iron frame Specification:  Part No: E20-6  Clamping Capacity: 6\" (150mm)  Frame Proof Loads: 1400lbs / 636kg  Weight: 2kg