IVY Classic Industries is dedicated to producing a comprehensive, quality line of power tool accessories and hand tools. IVY Classic Combo Drill/Tap Bits are designed for drilling, tapping, deburring and countersinking in steel, copper, brass, aluminum and plastic. Constructed out of hardened and tempered M2 High Speed Steel for long life, these bits feature a 135-degree split for accurate self centering and drilling exact size hole for tapping. The tapered design beyond tap prevents thread damage from excess drilling.