20pc bulk/ trade packs available in 34mm Wood and 34mm Wood & Metal Blades. The Wood Blades are manufactured using Chromium-vanadium steel, for use on wood/ timber, plasterboard, plastics and similar material applications. The Wood & Metal blades are Bi-metal and feature milled and hardened HSS teeth for standard cutting on hard & soft wood, wood with nails, sheet steel, plastics, aluminium and other non-ferrous metals.