The Carver Standard-Duty Long Reach Rack Clamps have many uses. The most common include welding, metal fabrication, moulding box and die holding, plate fabrication, plastic and fibreglass moulding and maintece work. The Carver T321-250 Standard-Duty Long Reach Rack Clamp has the following specifications Capacity 250mm (10in). Reach 120mm (4.3/4in). Overall Length 360mm (14.1/8in). Clamping Force 5,650N. Weight 2.0kg.