1. These explore replacement blades are fully compatible with for Explorer Air 2/Air/Maker/Expression, suitable for machines. 2. These explore replacement blades are made of quality material, and not easy to rust, you can cut your project fluently and cut clean with no dragging and no skipped spots. 3. 45 degree standard blades are universal cutting blades, such as poster board, foiled card stock, poster board, and computer paper, vinyl, stickers. 4. In order to avoid scratching your fingers, these blades are wrapped in a rubber cover, Please pull them out of the cover during use. These knife blades for must be adjusted manually according to different types of blades or different cutting material., Weight: 0.08377565956 pounds, Manufacturer: Frewurwer