High durability in mechanical parts, motor and carbon brush. TOOL ONLY!USER BENEFITS:3 operation modes ? hammering, hammering with rotation, rotation.Ergonomic D-Shaped handle with rubberized soft grip provides more comfort and better control while minimizing hand fatigue and pain.One-touch sliding chuck for easy bit change.Double Insulation, Variable Speed, Reversing, SDS Plus, Torque Limiter and Carry Case. Tool sold without bit.