The Dremel 561 Multi-Purpose cutting bit is ideal for free-hand cutting in softer materials like soft wood (less than 12mm thick), drywall, glass fibers, vinyl siding, laminate, aluminum and plastic. The cutting bit features a 1/8" (3.2mm) spiral fluted shape. Use with the 565 Multi-Purpose Cutting attachment is recommended; the attachment is designed to help maintain depth during the application.