The Malco 5 Blade Gutter Downspout Crimper is a 5 blade design produces 1-1/4 in. (31.75 mm) long double crimps without causing deformation of downspout walls. A factory-like crimp ensures the downspout walls stay square for a tight fitting, leak-proof connection. A handle closing stop helps to maintain a consistent crimp profile. Made with hardened all-steel construction and a nickel chrome finish, you can be assured this tool will last a long time.