The X-ACTO X-LIFE line features blades that are designed for an extended life and maximum performance. Each blade is oxidized to preserve the blade’s edge and prevents rusting. The #18 Heavyweight Wood Chiseling Blade by X-ACTO is a durable chiseling tool, capable of working with heavy duty woods and surfaces. The chisel has a straight, razor sharp blade that is sturdy enough to handle harder woods with ease – perfect for making deep cross cuts in a variety of craft materials.