Bosch HS2166 1 1 8 Inch Hex Shank 20 1 2 Inch Long Superkut Chisel 2 3 4 Inch Wide Forged Alloy Steel Concrete Demolition Breaker Hammer Bit Table Saws or the included wall adapter or the included wall adapter block pour a small amount of water around the entry point to lubricate the earth pathway and prevent excessive friction thermal loops Proprietary Heat Treat Forging: Premium industrial alloy steel formulation engineered to combat structural fatigue and eliminate catastrophic bit breaks under load this premium demolition attachment features a unique 2 3 4 inch wide profile that is meticulously engineered to maintain a self sharpening geometry during intense structural fracturing