Variable 2-Speed Hammer DrillReversible Improved motor durability with new machined metal gearing Torque limiter stops bit rotation if bit jams for increased operator safety and enhanced tool protection Industrial aluminum gear housing for durability Industrial strength keyed chuck for durability 1 2" chuck will accept 3 4" concrete bits with 1 2" reduced shank 360 side handle Includes: 1 2" Drill chuck & key set, Side handle, Depth gauge, Plastic carrying case Chuck Size: 3 4"