Used for edging and grooving wood, Dremel router bits are ideal for routing, inlaying and mortising in wood and other soft materials. Straight Router bits are flat on the bottom for cutting square grooves, rabbets and dadoes, and for leveling recessed areas. They work well for routing down the center or interior of a piece of wood. The 654 Straight Router bit features 1/4 In. (6.4 mm) cutting diameter. Can be paired with the Dremel 231 Shaper Router Table or the Dremel 335 Plunge Router attachments.