The Kenworth, Peterbilt, and Western Star 5 Hole Black Hub Adapter is a practical and versatile product designed to fit most Kenworth, Peterbilt, and Western Star models. With a sleek black finish and a 5 hole bolt pattern, this hub adapter is both stylish and functional. It features a 36 spline count and is sold individually. This adapter is compatible with Kenworth models from 1972 through March of 1997, Peterbilt COE fixed models from 1973 through April of 1998, Peterbilt Conv. fixed models from 1975 through April of 1998, and most Western Star fixed models.