With the AutoBlade, you don’t have to manually adjust your blade. The Silhouette Studio® software program will provide recommended cut settings for common material types, which can be adjusted in the software as needed. When you send the job to your Silhouette machine, your Cameo 3 or Portrait 2 will automatically adjust the AutoBlade to the selected setting from the software. Blade Material: Sintered Tungsten Alloy Adjustment Method: Automated adjustment (controlled by software setting and adjusted by machine) Blade Length Range: 0.1 mm - 1 mm For use in cutting: Paper Cardstock Sticker Sheets Heat Transfer Materials Vinyl Select Specialty Materials Compatible Machines: Silhouette Cameo® 3 Silhouette Portrait® 2*Not compatible with other Silhouette cutting models ** note if you need the auto blade for the Cameo 4 please indicate in notes when ordering**