Diablo 7/8 In. x 16 In. SPEEDemon Spade BitSPEED TIP self feed design effortlessly pulls the bit with minimal effort and faster holes Optimized curved paddle design quickly removes chip build up for more holes per charge Impact Strong increases shank stability and durability Angled spur cutting edge scores wood for clean holes and reduced blowout Maximum performance in cordless and corded impact and drill drivers