The Silhouette Autodetect Rotary Blade allows you to achieve precise, smooth cuts using your Silhouette Cameo 4. Its designed to cut fabric-based materials, allowing you to expand your creative potential with the help of Silhouette. The blade features an autodetect chip to allow the technology to detect which blade is inserted, without the need for changing the settings. Use this blade in tool slot 2 only and it will allow you to harness the cutting force of the new and improved Cameo 4 model. The blade will roll across fabric media cleanly and easily, working well with materials including felt, leather, denim, cork, cotton icing sheets and rice paper.Blade length range: 1mmCompatible with the Silhouette Cameo 4 Use with a strong tack matFeatures auto blade detectionMade from Tungsten CarbideDesigned for cutting fabric-based materials Silhouette Autodetect Rotary Blade. cricut die cutting machine > sizzix big shot plus