FeaturesPrecision machined steel construction for accuracy and durability universalUniversal, lock nut design compatible with most popular routers complete selection of guides for most common template routing applicationsDurable impact-resistant carrying case includes two locking nutEach guide is constructed from precisely machined steel for years of reliable, accurate, rust-free template or pattern routingComplete selection of the most popular router template guidesThe universal, lock-nut (1-3/16 in center hole) design fits Milwaukee® and most other popular routers when equipped with a 1-3/16 in center hole sub-base