WIDE RANGE OF APPLICATIONS. Suitable for drilling steel plate, stainless steel, A.C. sheeting, aluminium, FRP, PVC, fibreglass & concrete coated pipes. TRIPLE-CUT 3 EDGE CUTTING SYSTEM. There are two sets of three different edged cutting teeth. One tooth slanted outward, one inward and one that peaks in the centre. This arrangement balances the cutting effort for smooth boring, better control and less chance of excess drag. ONE PIECE BODY STRUCTURE. With a one piece structure, there is no play or flexing between the shank and cutting edge, resulting in sharp, crisp, smooth cutting. SAFE STOPPER COLLAR. Getting the holesaw stuck in the back of the cut material is prevented for safer, faster drilling.