11.5A, Spline Demolition Hammer With Kit Box, Motor Provides High Performance & Overload Protection, Designed For Continuous Use In Brick, Block, Concrete, Tile, Plaster & Mortar, Accepts 3/4" Hex x 21/32" Round Shank Steel For Increased Versatility, Adjustable Impact Control Allows User To Limit Impact Force When Low Impact Hammering Is Necessary, Soft Start Feature Allows For Precise Chisel Placement At Start Up, LED Lights Indicate When Service Is Necessary, Dual Wall Housing Construction With Rubber Mounts Isolates Vibration, Multiple Seals Prevent Dust From Entering Tool, Switch & Brushes Designed For Long Life, Highly Efficient Cooling System Protects Tool, 360 Degree Side Handle Is Easily Adjustable, Modular Design Provides Easy Serviceability, Hammers Designed For Fast, Continuous Demolition Of Brick, Block, Stone & Concrete, Continuous Use In Tile, Plaster/Motor Removal, Specialty Applications Like Ground Rod Driving, Tamping, Digging, Asphalt Cutting & Concrete Bushing.