Replace the worn or broken Flex Shaft Rotary Tool Attachment in the Dremel 100, 200, 3000, 4200, and 4300 with the new Dremel 225-02 26150225AJ Flex Shaft Rotary Tool Attachment. These 225-02 26150225AJ Flex Shaft Rotary Tool Attachment are compatible with Dremel models; 100, 200, 3000, 4200, and 4300 (sold separately). Please reference the tool manual before purchasing to ensure the proper fit and care of these tool parts. These are genuine Dremel power tool replacement parts.