Designed for use in all positions. High strength alloy steel for durability. Chrome plated piston resists wear and corrosion. Dust wiper on piston rod reduces contamination. Baked enamel finish for increased corrosion resistance. All cylinders are proof tested to 125% of capacity before leaving our factory. 05- 100 ton cylinder bores are roller burnished to harden the surface and make it smoother. Each cylinder has 3/8”NPT male half coupler and dust cap.