PB Swiss Tools professional set of parallel pin punches are octagonal-shaped and come in a handy plastic holder. A special steel alloy and precision heat treatment guarantee pronounced elasticity along with a high degree of hardness. If subjected to overstressing, PB Swiss Tools parallel pin punches deform elastically and plastically, rather than suddenly breaking. The chrome-vanadium-plated surface provides an exceptional protection from corrosion and an attractive finish. Each tool is 100 percent Swiss made and comes with an unlimited lifetime guarantee. For more information visit www.pbtools.us.