Use the Kango 32-175mm Hole Shot Arbor with Cobalt Pilot Bit to Connect Hole Shot Saws to your drill. This Arbor is compatible with Kango Bi-Metal Hole Saws and Carbide Hole Shot Saws in sizes ranging from 14-30mm. Make fast and easy changes between different Hole Saw sizes and shapes with the Arbor’s Tool-free change feature. Its 7/16” hex Shank is designed to reduce chuck slippage and support a more controlled and precise drilling action. The included M35 Cobalt Pilot Bit is capable of drilling into stainless steel, hard metals, cement sheet, wood and plastic. The Pilot Bit’s 5% cobalt alloy is designed to withstand extreme levels of heat and abrasion from drilling into stainless steel and hard metals. A 135° split point helps prevents the Pilot Bit from wandering which supports precision starts and faster start-up speeds.