Armeg SDS Scutch Comb Chisel is the perfect choice for general electricians preparation work in masonry. Hammer action chisel is purpose designed for masonry dressing, levelling uneven masonry surfaces and forming channels / back box holes etc. 25mm Chisel is ideal for applications such as intricate work, working in tight spaces and producing narrower channels in walls. Designed for use in SDS Plus machines with roto-stop facility. Can be used in general concrete, soft bricks, lightweight mortar, limestone, constructional granite, natural stone, hard bricks, heavy duty concrete.