Typically, the industry standard for router guide bushings is the Porter Cable type, from Harbor freight or other sources, they are all the same diameter for the recess and will fit in any router with that ID recess. The jig doesn't care which brand of bush\ing you use as long as it the PC type. The router doesn't care either as long as ithey fit in the recess in the base. I prefer the brass ones from Harbor Freight at the lowest price point, they work fine. I have an old steel set, but will not use them.