1. These explore replacement are fully compatible with for CRICUT Explorer Air 2/Air/Maker/Expression, suitable for CRICUT Maker machines. 2. These explore replacement are made of quality material, sharp and durable not easy to rust, you can cut your project fluently and cut clean with no dragging and no skipped spots. 3. 45 degree standard are universal cutting , such as poster board, foiled card stock, poster board, and computer paper, vinyl, stickers. 4. In order to avoid scratching your fingers, these are wrapped in a rubber cover, Please pull them out of the cover during use. These knife for CRICUT must be adjusted manually according to different types of or different cutting material.<br><br>Blade Length: 23.5mm Shank Diameter: 2mm Angle: 45 Degree colour:Black+silver Material:Tungsten steel<br><br>Package Contents: 20 x Cutting <br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.