General description Hardened drop forged steel with a shot blast finish, this Silverline SDS Plus Hex Chisel Set includes 20mm and 40mm chisels along with a point, making it ideal for general breaking up and demolition work. It is suitable for use on all masonry, stone, brick, and concrete surfaces. Technical specifications Chisel sizes: 20mm and 40mm Length: 250mm Shank type: 15mm hex shank Compatibility and accessories Compatible with all SDS Plus machines, including Silverline and GMC