Hardened drop-forged steel SDS Max chisel point with shot blast finish. For general penetration and demolition work. Can be used on all masonry, stone, brick and concrete. 18mm round shank. Compatible with all SDS Max machines. Hardened drop-forged steel SDS Max chisel point with shot blast finish. For general penetration and demolition work. Can be used on all masonry, stone, brick and concrete. 18mm round shank. Compatible with all SDS Max machines.