Milwaukee® Corded Rotary Hammer Kit, Reversing, 1-1/8 in Chuck, SDS Max® Chuck, 5500 bpm Blows per Minute, 3.6 ft-lb Impact Energy, 1500 RPM No-Load, 3 Speed, Max Core Bit Compatibility: 4 in, 1-1/8 in Maximum Solid Bit Capacity, 120 VAC, 8 A, Metal/Plastic Housing Material, D-Handle/Drop Motor/Side Handle, Variable Speed Trigger Switch/Forward/Reverse Switch/Clutch Control, Yes Reversible, 12-1/2 in Overall Length. Milwaukee® 5268-21 Reversing Corded Rotary Hammer Kit, 1-1/8 in SDS Max® Chuck, 5500 BPM, 1500 RPM No-Load, 4 in Max Core Bit Compatibility