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 They have a drop-forged steel frame for strength and durability with a swivel shoe which helps clamping on uneven surfaces The twin-start ACME cold rolled thread for faster operation and the fused steel handle will bend before the clamp can be overstressed A popular general purpose clamp for heavy-duty applications for use in wood and metal working and other trades Available in the following sizes REC1203 75mm REC1204 100mm REC1206 150mm REC1208200mm REC12010 250mm REC12012 300mm