30 Ton cylinder, single acting, 6 stroke PowerX center hole cylinders are designed to perform both push and pull applications. Single Acting, steel construction, spring return. Threaded collar, threaded plunger & base mounting holes for easy fixturing. 3/8 NPTF high flow coupler with dust caps. Durable exterior finish and ANSI B30.1 compliant. Hollow chrome plated plunger design allows for both, push and pull forces.