The replacement blades come in a pack of two. They will last for between 500-1500 cuts depending on type of paper you use. You will know when your blades are getting dull because your cuts will not be as crisp.

Cricut Trimmer Replacement Blades keep your trimmer sharp and ready to use. These blades are durable and custom designed for sharp, precise cuts. There is nothing worse than starting a project and realizing that your blades are dull, so keep plenty on hand. Use with item # 29-0012. 2 pack.

Clear mounting squares are acid-free, archival and photo-safe. Each box includes 500 1/2″ x 1/2″ double-sided adhesive clear tabs.