The 8.5 x 6" Silhouette Curio Cutting Mat is for use with the Silhouette Curio cutting machine, for holding materials in place when sending jobs to the machine. It's intended for use with the Curio's standard 6" base. The mat has a regular adhesive level to hold most cardstock and general material types in place. This mat replaces the regular cutting mat that is initially included with the Curio machine.