Irwin marples ms500 soft touch bevel edge chisel sets irwin 10503430 the irwin split proof pro bevel edge chisel is a carbon rich blade manufactured in a solid one piece forging which is then hardened and tempered up to the last inch for a long working life the guaranteed split proof handle helps absorb harmful vibrations it features a highly durable friction grip and sturdy neck and bolster which is honed and sharpened the metal striking cap allows use with a hammer prolongs the life of