Pro Lock - The Secure Fast Change Holesaw System Work faster & smarter with the unique Alpha Pro Lock arbor system. Reduce holesaw changes to seconds & eliminate jamming thanks to the engage & twist design. Kit Features: Fast arbor changes & slug removal Positive, rigid locking mechanism for clean & accurate holes 118 degree split point reduces wandering Fully ground M2 HSS pilot drill for extended life (PLD-7) 7/16" heavy duty extension bar for extended working reach (WAH-QREXT300) White Pointer Bi-Metal holesaws included in every kit: Multiple ejection slots for rapid removal of thick & thin plugs (25mm & over) 4/6 variable tooth configuration reduces vibration for a smooth, accurate cut Unique multiple grinding technology for faster cutting & longer life Bi-metal construction with 8% cobalt welded teeth for extended life in industrial applications International standard thread pattern accepts all common arbors Ideal for steel, stainless steel, cast iron, non-ferrous metal, wood & plastic Kit Contents: 7 x White Pointer Bi-Metal holesaws with Pro Lock adaptors: 20, 25, 32, 40, 51, 70 & 92mm Fast Change Arbor with 102mm HSS pilot drill 7/16" heavy duty quick release extension bar - 300mm OAL (WAH-QREXT300) Spare 102mm HSS pilot drill (PLD-7) See how much time you could save with Pro Lock! Watch the video here: