Inserts directly into the chuck of a standard 1200 rpm A/C or cordless drill. It's that easy to convert your power drill to a power shear! Cuts straight and to the left and is capable of navigating tight curved patterns and squares in heavy 20 gauge (1.02 mm) galvanized steel. For premium performance without the premium price of a dedicated power shear, it's is an easy addition to every tool bag.