Use the Cricut Rotary Blade Replacement Kit to replace the blade in your Cricut Maker and ensure the best cutting performance. The kit includes a specially designed protective changing cap, which keeps the blade covered during replacement, so you never risk contact with the blade. Also included: one rotary blade, washer, nut (preinstalled), small screwdriver, and blade changing instructions. For best results, replace your rotary blade when you notice uncut threads or when the material settings in DesignSpace no longer seem accurate. Use with Cricut Maker smart cutting machines only (will not work with Explore family or other machines).