Built Tough for Stair Building Manufactures and Contractors Gross Stabil Corporation a leading manufacturer of woodworking, metalworking clamps and accessories has just introduced a clamp designed just for professional stair builders. The Stair Clamp features a galvanized steel rail, malleable cast iron threaded spindle assembly, durable plastic clamping pads, and a tough, durable, unbreakable polypropylene plastic handle guaranteed for a lifetime of use. Longer spindle allows clamping of larger projects. This easy to use clamp quickly adjust to accommodate virtually any size pieces of wood, with clamping pressures of up to 1400 pounds. Made in Germany from the highest quality materials and craftsmanship.