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Extend the reach of any 1/4-inch hex shank driver an extra 6 inches with a Quick-Change Malco Extension Bit. All bit extensions have a fast and easy push-in style receiver, with 3 ball bearing detents that holds any 1/4-inch hex shank power groove or insert bit securely. The impact grade steel construction make these a reliable and durable tool to use on the jobsite. All of these Impact Grade Extension Bits work with a drill or impact driver.