The starrett kfc11031 bi metal fast cut universal 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 a sturdy eva carrying case these kits will be an invaluable addition to any toolbox contains 11 x bi meta holesaws 19 22 25 32 35 38 44 51 57 64 76mm2 x arbors a1 a21 x a5 extension