This set is compatible with the following plotters: Brother ScanNCut Silhouette Portrait 1+2 Cricut Explore Air 3 Silhouette Cameo 1-3 Silhouette Curio Silhouette Cameo 4 Cricut Explore Air 2 Cricut Maker 3 Brother DesignNCut Cricut Maker

Here are more details about the brand compatibility: Compatible with Cricut, Silhouette, Sizzix and Brother. Use the special adapters to easily mount your electronic cutting machine (4 x adapters for common hobby plotters (Brother, Silhouette, Cricut, Sizzix) )

Yes, I use it with the Cameo 4