Tandy Leather Craftool� Pro Line Lacing Chisel 1 Prong 5/32" (4 mm) 88042-01 For 5/32" wide lace. Made from 41xx steel, these chisels have incredible strength and toughness due to the case hardening process after the chisels are formed. Beautifully finished with a black electrophoresis coating to prevent surface corrosion and provide wear resistance. Used with our Professional Cutting Board #3465-00, these elite chisels will perform like a charm and provide you years of use.