The starrett kfc06021 bi metal fast cut electricians holesaw kit 1 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 6 x holesaws 16 20 25 32 40 51mm 2 x arbors a1 and a10