The Rockwell RW9190 Accessory Adapter works lets you use your existing Multi-Tool accessories from other Brands - like Fein and Bosch - with the Rockwell SoniCrafter. The RW9190 is perfect for professional remodelers that already an Oscillating Multi-Tool but want to upgrade to a SoniCrafter. Features: Allows you to attach Fein and Bosch multi-tool accessories to the Rockwell SoniCrafter Whats In The Box: Rockwell RW9190 Accessory Adapter for the SoniCrafter