An assortment of countersunk hex pipe plugs from The Hillman Group. Pipe plugs are fittings used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. Variants included in this assortment range from 1/16" to 1" in trade size, which refers to the diameter of the plugs. Full assortments of #56285 contain seven (7) refills comprised of Hillman item numbers #405577 - #405583.