RYOBI introduces the Rotary Tool 150-Piece Twist Lock All-Purpose Kit. Featuring the RYOBI Twist Lock Mandrel which helps secure the accessories during use and prevents the accessory from coming loose. This set is perfect for multiple applications with options for cutting, carving, engraving, cleaning, polishing, and grinding. This set contains Interchangeable Bit Bars. These bit bars are interchangeable with drill drive cases as well as the RYOBI Link Storage System. These accessories offer universal fitment and are compatible with any rotary tool including Dremel. Expand your hobby and maker capabilities with these RYOBI accessories.. Includes cutting, carving and engraving, cleaning and polishing, and grinding options. Includes Stand-Up Case. Interchangeable Bit Bars.