For Select Cameo 4 and Portrait 3 Cutting Machines. This AutoBlade Type B (2nd Generation) from Silhouette can be used with select Cameo 4 and Portrait 3 cutting machines. It features a high-performance tungsten alloy blade with an adjustable blade length range of 0.1-1mm. The Silhouette Studio software program provides recommended cut settings for common material types which can be adjusted in the software as needed. When the job is sent to the cutting machine the AutoBlade will automatically be adjusted according to the selected setting from the software.