Bessey TGK50K Heavy duty malleable cast iron screw clamp TGK 500/120 Tommy Bar, BE100101 - Clamping force up to 7,000 N. Strengthened design for higher clamping force and wider opening widths. With Tommy Bar. Pressure plates can be replaced by hand Ð no tools required. Stable profiled rail with serration. Bessey anti-slip system.