SDS chisels are forged from high quality steel and using CNC machinery. Each chisel is crafted individually through forging, sharpening, hardening, tempering and finishing. Our chisels are hardened and tempered under strictly controlled manufacturing process for optimal masonry removal. All chisels are oil quenched and shot blasted for anti-rust lacquered in the final finishing process. To achieve long service life. Used in a broad range of application including: road construction, pavement work, bridge construction and demolition. For breaking or chipping concrete, cutting asphalt, clay removal and removing concrete or mortar in between bricks and joints.