Dremel 692 6pc Router Bit Set. A set of six high-speed router bits made from high-grade steel and packaged in a reusable plastic case. Set includes; Dremel 612 - Beading Router Bit; el 615 - 1/8 inch CORNER ROUNDING Router Bit; Dremel 617 - 1/4 inch CORE BOX Router Bit; Dremel 618 - Piloted 45 degree CHAMFER Router Bit; Dremel 650 - 1/8 inch STRAIGHT Router Bit; and a Dremel 654 -1/4 inch STRAIGHT Router Bit. For use with the 335 Plunge Router and 231 Shaper/Router attachments. For use in Dremel rotary tools. 1/8 inch shank.