CNBTR Wood Color Carbon Steel Carving Firmer Gouge Wood Chisel Set DIY Woodworking Handle Carpentry Tools Pack of 4 Made of hard carbon Steel and polished solid wood. The blade edge at the inner bowl of the steel gouge, please check it in the pictures. Dimension of the 4 blade width: 1/4" , 1/2", 3/4", 1" ; the total length from wood handle to steel end 24cm/9.5" Please note: initial forged edge processing, you need to sharpen and regrind the edge. How to use: hit the wood handle of the chisel by a hammer when work on solid wood.