The Irwin Tools MS500BS4N Bevel Edge Chisels with Steel Strike Caps 4-Piece Set features Quality Blades that are strong in design and stay sharp to the last inch. The Splitproof handle is strong enough to be hit with a hammer. Used by the professionals and the DIY enthusiast alike. Professionals who use chisels everyday know that the edge retention is key to chisel performance. That is why these chisels are manufactured from solid-forged, chrome vanadium steel.