Cut plastic wood paper or other craft materials with precision using these Excel Number 22 hobby blades. Get high-quality razor-sharp -made steel that easily slices trims or carves with these replacement edges. The 1.43 x 0.25 x 1-inch edge fits in all standard light and medium craft knives so you can upgrade your existing tools. Install new hobby blades before you start a new scrapbook or carving project.