A threaded pin in the sliding bracket engages with the rail's ribbing. This effectively prevents the clamp from loosening or slipping. Both the upper and lower parts are made from high-quality ductile iron and reinforced with ribs. The powder coating protects against corrosion, and the characteristic ribbed profile serves as a reliable reinforcement against torsional forces. The BESSEY hollow profile rail, produced in-house, is specifically optimized for clamps. The six-fold ribbing further prevents the clamp from slipping. The tool-free interchangeable pressure plate adds even more convenience to your daily work. It can be easily and quickly replaced.