Our SDS PLUS SLEDGE™ Chisels are our Longest Lasting, Most Productive family of chisels. The SDS PLUS SLEDGE™ Mortar knives are forged with high grade steel to deliver maximum durability and reduced wear over the life of the mortar knife. These mortar knife has an optimized profiles, ideal for removing mortar between horizontal and vertical bricks. We've engineered them to maintain their shape for increased productivity. The mortar knives are designed with a precision-forged tip for preserving decorative stone and brickwork and a dust channel for fast debris removal. For use with SDS PLUS rotary hammers.