Hardened drop forged steel Hex chisel point with shot blast finish. For general penetration and demolition work. Can be used on all masonry, stone, brick and concrete. 28mm hex shank. Compatible with Silverstorm 1500W Electric Breaker (263570). Hardened drop forged steel Hex chisel point with shot blast finish. For general penetration and demolition work. Can be used on all masonry, stone, brick and concrete. 28mm hex shank. Compatible with Silverstorm 1500W Electric Breaker (263570).