Made out of carbon steel, they can cut through multiple layers of fabric, leather, fleece, vinyl, denim, and other dense materials. They are designed with a universal opening so they will fit on other rotary cutters with the same opening.

Blade Durability
This can vary from person to person and how one uses their cutter, as well as the type of cutting mat they have. Blades were tested at various fabric shops in Toronto, Canada, and after using them for up to 8 hours a day, five to seven days a week, each shop got between 3 - 4 months of use from one blade!