EC-GS40C | Trademaster H.D. Clamp 400 x 120mm 1200kgp (Changeable Pads) Features Larger rail sizes & acme spindle for heavy duty applications. Changeable clamping heads. Socket drive handle. Tempered and hot forged steel for rigidity. Cold drawn profiled steel. Precisely controlled hardening and tempering process over the whole clamp body gives strength for high clamping force. Nickel and chrome plating for high corrosion resistance Specifications Span: 400mm Depth: 120mm Rail Size: 30 x 15mm Clamping Force: 1200KG