General description IRWIN Record Heavy-Duty 120 Series G-Clamps are designed for high-performance clamping, particularly in metal working and fabrication tasks where a strong clamping force is essential. These clamps are known for their durability and strength, making them a popular choice for heavy-duty applications in both wood and metal working. Technical specifications Size: 305mm (12 in) Throat depth: 117mm (4 5/8 in) Frame material: Drop-forged steel Thread type: Twin-start ACME cold rolled thread Other information Swivel shoe for clamping on uneven surfaces Fused steel handle designed to bend before overstressing the clamp Available sizes: REC1203 (75mm), REC1204 (100mm), REC1206 (150mm), REC1208 (200mm), REC12010 (250mm), REC12012 (300mm)