Feature:1. Piston Installer Pliers: Tool set for compressing piston rings for cylinder installation, fine tooth lock allows you to compress bands in small increments, universal fit for cars.2. Application: Piston ring compressor tool can be tightened to fit any pistion from 27/8in (73mm) to 43/8in (111mm) in diameter, please check before ordering.3. Pliers Unique Design: The ring compressor pliers feature a ratcheting lock to hold the handles in position for easy piston installation.4. Durable Material: Made of high strength metal material, which is wear resistant, bend proof, high hardness, impact resistant and has long service life.5. Storage Box: Pack includes heavy duty carrying case with handle for easy transportation, safe storage, and quick organization, and prevents parts from getting lost.Specification:Item Type: Piston Ring Compressor SetMaterial: MetalApplication: Universal fit6 Band size2-7/8-Inch thru 3-1/8-Inch3-1/8-Inch thru 3-3/8-Inch3-3/8-Inch thru 3-5/8-Inch3-5/8-Inch thru 3-7/8-Inch3-7/8-Inch thru 4-1/8-Inch4-1/8-Inch thru 4-3/8-Inch.Package List:1 xPiston Ring Compressor6 x Accessory1 x Box