High efficiency by high speed. TOOL ONLY!USER BENEFITS:2 operation modes ? hammering with rotation and hammering only.When drill bit hits against reinforcements, torque limiter operates to stop.Aluminum housing provides high quality and toughness.Ergonomically designed handle with rubberized soft grip provides more control and comfort.One-Touch sliding chuck enables easy bit change.Double Insulation, Torque Limiter, SDS Max and Carry Case. Tool sold without bit.