The Rotary Blade for Cameo 4 provides an alternate method of cutting by having the blade roll across your material. This enables you to cut a variety of specialty material—including cotton fabrics leather felt wool and more—without a special stabilizer backing. Recommended for use with a Strong Grip High Tack Mat. 1 Rotary Blade Only Works with Silhouette Cameo 4 Fits the High Pressure Carriage of the Cameo 4 - Right Carriage Cut Cotton Leather Felt Wool Flannel Thin & Thick Fabric Denim Tulle Tissue Paper and More