Hollow plunger is designed for carrying out both push and pull operations i.e. tightening cables, bars and bolts, extraction of sleeves and bearings. It is made of hollow hard chrome plate. Collar threads are used for easy fixing. It has interchangeable saddles - plain, threaded and solid. It is versatile in testing, maintenance and tensioning applications. If we need a higher cylinder capacity-to-weight ratio, we can use aluminum hollow plunger cylinders.