AGS Fitting Assortments are designed for specialty and general repair shops. Each assortment contains a specific collection of fast moving fittings that should be kept on hand when working with automotive hydraulic braking systems. Assortments are packaged in shatter-resistant, see-through plastic trays. Locator labels on the inside lid make locating, selecting, and re-filling quick and easy. Master Cylinder Adapter Assortment - 18 SKU. A complete master cylinder adapter assortment for converting different sized port opening on master cylinders to standard braking systems. Adapters are included for converting from non-standard UNF imperial threads to standard 3/16in, 1/4in, 5/16in and 3/8in brake, fuel, and transmission systems. Also convert domestic systems to import systems and vice-versa.