The DeWalt DW6188 is a Template Guide Set. It is nine-piece, precision-machined steel template guide set for enhanced accuracy and durability. It has universal standard size for all DeWalt routers as well as any router that accepts a standard 1-3/16 outside diameter template guide.

(5/16" OD x 1/4" ID x 5/32" L) Guide plate
(3/8" OD x 9/32" ID x 5/16" L) Guide plate
(7/16" OD x 11/32" ID x 5/32" L) Guide plate
(1/2" OD x 13/32" ID x 5/32" L) Guide plate
(5/8" OD x 17/32" ID x 5/8" L) Guide plate
(3/4" OD x 21/32" ID x 9/16" L) Guide plate
(51/64" OD x 5/8" ID x 9/16" L) Guide plate
2 Lock nuts

Enhancing accuracy and durability