Makita Demolition Hammer 30mm Hex Size:Corded Adjustable chain oiling TLA312 Adjustable chain oiling Makpak stacker case #4 & decreases the amount of vibration to operator's hands Variable Speed control dial enables user to match the speed to the application for greater versatility Constant speed control automatically applies additional power to the motor to maintain speed under load to complete the most challenging jobs Soft Start suppresses start up reaction for smoother start ups and better accuracy Automatic Brush Cut Off protects commutator from damage for longer tool life Electronic with Variable speed control by dial LED service light that indicates when to replace carbon brush LED power light that indicates trouble with the electric circuit Specifications Shank Type 30mm Hex Blows per minute 730 1