This Supertech manganese bronze exhaust valve guide is specified for Honda K-series applications with a 6.0mm stem and is sold as a single unit. The description provides the engine family and stem size, making it suitable for targeted replacement of a worn exhaust guide during cylinder head servicing on K-series engines.
Supertech Honda K Series 6.0mm Stem Manganese Bronze Exhaust Valve Guide - Single (Drop Ship Only)