The starrett kfc12021 bi metal fast cut plumbers electricians holesaw kit is suitable for all tradesmen installation engineers industry generally and the diy enthusiast starrett kits feature a range of saws with sizes selected specifically to suit the relevant application packed in our new sturdy eva carrying case these kits will be an invaluable addition to any toolbox contains 12 x holesaws 16 20 22 29 35 38 40 44 51 57 65 68mm2 x arbors a1 a2