Starrett 14pce Bi-Metal Fast Cut Hole Saw Set KFC14021Exceptionally strong, safe, and shatter resistant Effectively and economically cuts a wide variety of materials including wood, metal, and steel This general purpose kit includes 14 Bi Metal Fast Cut holesaws, plus two arbors: A1 Standard length and A2 Quick Hitch. Holesaw sizes as follows: Contains: Kit Contains 16mm, 20mm, 22mm, 25mm, 29mm, 32mm, 35mm, 38mm, 44mm, 51mm, 57mm, 64mm, 68mm and 76mm + 2 x arbors & ejector spring.