Heat-treated chrome vanadium steel alloy blades. Much more durable than normal chisel. Each chisel with protective cap 8-piece wood chisel set - 6mm(1/4"),10mm(3/8"),13mm(1/2"),19mm(3/4"),25mm(1"),32mm(1-1/4"),38mm(1-1/2"),50mm(2") Precision Honing Guide with sharpening stone for chisel daily maintance Non-slip long rubbery handle offers strong and ergonomic grip when in use Solid wood carrying case keeps all chisels safe. Each tool fits snugly into its respective place to prevent moving around and scraping