CST SERIES COMPACT SLIMLINE BOLT TENSIONERS CST Series are slimmer, variable type Bolt Tensioners consisting of five parts - Puller, Puller Nut, Load Cell, Bridge & Nut Driver as shown below: The tool consists of two basic parts - Tensioning Unit and Puller Nut as shown above: Features Versatile Design: Designed to provide a wide range of flexibility, covering stud sizes 3/4” to 2.1/2” (M-20 to M-64). High Strength Alloy Steel Construction: All Parts are made from high strength Aircraft Quality alloy steel for long lasting performance and better safety factor. Stroke Indication: Marked Piston indicates stroke and provides an over stroke indication. Safe Design: Designed to release high pressure hydraulic oil inwards in event of over-stroke, thus saving the operator from exposure.