The ultimate Mandrex Bi-Metal Electricians Hole Saw Set has arrived! This Electricians Hole Saw Set comes complete with the Mandrex One Click Arbor System this is a set that will change the hole sawing experience for ever! Long lasting Bi-metal Electricians Hole Saw Set with unique ejection holes for extra chip release and weight reduction. The Mandrex SpeedXcut M42 Hardened steel, in combination with our special tooth geometry, provides the smoothest cut requiring less feed pressure. Supplied in a tough blow moulded stylish case, it even has room to expand your set to include other sizes, these kits are a must have for tradesmen. This Kit Comprises the following sizes and items; MXqs arbor with HSS pilot drill (chuck HEX11 11/32PB) 1 x extra HSS pilot drill Hole Saw sizes all in the SpeedXcut M42 8% Cobalt Hole saws; 20, 25, 32, 38, 51, 73mm M42 HOLE SAW FEATURES Extra release holes to push out thin plate core material easily Bi-metal with 8% cobalt alloy for a longer lifetim