Marples M373/S4 4-Piece Splitproof Chisel Set Beveled edge Cellulose acetate butyrate is designed for firm gripping and robust work as well as delicate work Sturdy neck and bolster for strength and shock absorption The long sturdy tang keeps the handly firmly attached to the blade Set includes 1/4", 1/2, 3/4", and 1" chisels