Contains: 2XHEX SHANK MANDRELS, 2XPILOT DRILL BITS, 7 HOLE SAWS DIA 16, 20, 25, 32, 40, 51, 64MM. Reduced wall thickness for fast, clean cuts in a range of materials. Premium quality High Speed Steel. Strong teeth for excellent cutting performance and durability. The entire tooth is made of HSS not just the tip. Large, staggered slots for fast, hassle free plug removal. Optimised tooth geometry for faster cutting – a sharper tooth with an aggressive cutting edge for fast, clean cuts through material. Excellent performance with increased durability thanks to the double tooth configuration and wide shoulders. A hassle-free universal mandrel connection made from hardened steel. It fits all brands and has a tool-free quick release collar.