This 11-piece piston ring service tool is durable enough to withstand day-to-day professional use in the workshop, but is also ideal for hobby mechanics. The tool kit contains piston ring compressors with a self-locking ratchet that prevents premature release and ensures a positive lock. The piston ring pliers can be used for the easy release of piston rings. A piston ring cleaner with three blades is also included. Made of high-quality materials, this tool set is very durable. The tools are delivered in a blow-moulded case for easy storage and transport.