120 heavy duty g clamp 250mm 10in irwin t120 4, irwin record heavy duty 120 series g clamps are the strongest record clamps, recommended particularly for metal working and fabrication work where a very high clamping force is demanded'. '.strtoupper('t')hey have a drop forged steel frame for strength and durability with a swivel shoe which helps clamping on uneven surfaces'. '.strtoupper('t')he twin start acme cold rolled thread for faster operation and the fused steel handle will bend before the clamp can be overstressed'. '.strtoupper('a') popular general purpose clamp for heavy duty applications, for use in wood and metal working and other trades '. '.strtoupper('a')vailable in the following sizes rec1203 75mmrec1204 100mmrec1206 150mmrec1208200mmrec12010 250mmrec12012 300mmirwin record heavy duty 120 series g clampsize 102mm 4 in.throat depth 60mm 2 3 8 in'. '.strtoupper('i')rwin® record® t120 4 120 heavy duty g clamp 100mm 4in