Diablo's SDS Plus and SDS Max Wide Chisels deliver extreme durability and stability in general demolition work, thin-set removal, cleaning concrete and removing scale and rust. A unique heat treatment process strengthens the steel body to withstand the stress and impact of high-powered hammer drills in concrete. Bracing ribs deliver stability and rigidity required in demolition applications. Self-sharpening edge increases productivity and extends the tools life. Optimized for maximum performance in corded and cordless SDS Plus and SDS Max rotary hammers.