CNBTR 8'' Firmer Gouge Flat Wood Carving Hand Chisel Set DIY Woodworking Tools Pack of 12 Safety instructions: Razor blades permanently enclosed in a cartridge or housing with less than 2mm of blade exposed. The bladed product is not use for people under 33 years. The item is only use for industrial cutting/engraving, not hazardous article. Blade factory is the primary processing, customers need to open front fine grinding Carpenter's choice of carve patterns or designs on woodwork