RCH-Series, Hollow Plunger Cylinders Hollow Plunger Cylinders Hollow plunger design allows for both pull and push forces Single-acting, spring return Nickel-plated, floating center tube on models over 20 ton increases product life Baked enamel finish for increased corrosion resistance Collar threads for easy fixturing $ Add to Cart May we recommend these products Hydraulic Couplers High Pressure Hydraulic Hoses