A threaded pin in the sliding bracket engages with the rail's ribbing. This effectively prevents loosening or slipping of the clamp. 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 provides reliable reinforcement against torsional forces. The BESSEY hollow profile rail, produced in-house, is specifically optimized for clamps. The sixfold ribbing additionally prevents the clamp from slipping. The tool-free replaceable pressure plate adds even more convenience to your workday, allowing for easy and quick changes.