This Tru-Flate 21-467 hose adapter is made of brass and has barbs on both ends for 2 plastic or rubber hoses with a 3/8" inside diameter. The barbed fitting on each end creates a tight seal on flexible or semi-rigid hose when used with a hose clamp, crimp sleeve, or ferrule (sold separately. This fitting is made of brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability. Brass can be connected to copper, brass, plastic, aluminum, and welded steel. This fitting is for use in air line systems.

Plews & Edelmann manufactures and distributes a broad range of automotive parts, tools, and accessories under the Amflo, Tru-Flate, Plews, and Lubrimatic brands. The company, founded in 1909, is headquartered in Dixon, Illinois.