This Piston Ring Compressor Tool is designed for convenient engine repair, featuring adjustable safety screws and universal compatibility. It ensures durability, environmental protection, and high-quality material construction, meeting diverse automotive repair needs a Piston Ring Compressor Tool Kit, typically used for automotive and mechanical tasks involving engine repair. This kit usually includes: Piston Ring Compressor Bands: Multiple bands of varying sizes to accommodate different piston diameters, often ranging from approximately 2-7/8" (73mm) to 4-3/8" (111mm) or wider. Ratcheting Pliers: Designed to attach to the compressor bands and compress the piston rings, often featuring a locking mechanism for secure handling during installation. Piston Ring Pliers/Expander: Used for the easy removal and installation of piston rings without damage, typically with tapered jaws. Storage Case: A convenient carrying case for organized storage and transportation of the tools. The purpose of this kit is to compress piston rings, allowing for smooth and undamaged installation of pistons into the engine cylinders.