The CMT 811.001.11 is a 3-Piece Plywood Groove Set. The CMT 811.001.11 3-Piece Plywood Groove 1/2-Inch Shank Router Bit Set is the only set to use if you are making joints in plywood. Since plywood thickness tends to be thinner than nominal dimensions, CMT offers you a way to work around the problem - our Plywood Groove Set includes three specifically selected bits designed for making clean grooves and dadoes for accurate fitting joints. Features: * Includes three specifically selected bits designed for making clean grooves and dadoes for accurate fitting joints * Use our 23/32 bit for 3/4 thick ply, 31/64 bit for 1/2 ply and our 15/64 for 1/4 ply * No gaps or sloppy joints, guaranteed What"s In the Box: * CMT 811.501.11 Plywood Groove Set 3-Piece * 811.060.11 2 flute straight plunge bit, 15/64 diam. 1/4 shank * 811.123.11 2 flute straight plunge bit, 31/64 diam. 1/4 shank * 811.182.11 2 flute straight plunge bit, 23/32 diam. 1/4 shank