Woodtek 165971, 5-pack, Router Bits, Dovetail, D2 Omnijig 7-Deg. Dovetail Bit 5/16"x 21/32" (hss) Guaranteed to work with all porter cable omnijigs. Specifications: "d"=1/4 in, "D"=5/16 in, "OAL"=2-7/8 in Specifications: Material=HSS, "H"=21/32 in, "A"=7 deg