Blade Length: 1-1/4"Starlock Interface For Professional Performance , Also Works With OIS Compatible Tools Including Bosch, Fein, Milwaukee, Makita, Rigid And MoreHigh-Carbon Steel Cutting Edge For Cutting Applications In Carpet, Cardboard, Asphalt Shingles And MoreSpecial Hooked Design For Fast Clean CutsColor Coded Interface And Laser Etched Blade To Quickly Identify The Right Blade