Piston Ring Compressor Set 7pc - PK Tool Achieve precise and efficient piston installation with the PKTool 7pc Piston Ring Compressor Set, engineered for versatility and control in tight engine compartments. Featuring a ratcheting plier design with six low-profile compressor bands, this kit offers accurate and controlled ring compression, making it ideal for use on motorbikes, small engines, machinery, and passenger vehicles. The ratcheting pliers use fine locking increments to self-adjust and maintain consistent pressure helping keep piston rings properly aligned and seated during installation. Designed with flexibility in mind, the multi-angle pliers and clip-style bands allow for both parallel and perpendicular use in relation to the cylinder block, enhancing usability in confined spaces. The six bands cover a piston size range from 73mm to 111mm, ensuring wide compatibility across different engine types. Built for reliability and ease of use, the PKTool compressor set is a must-have for workshops, engine rebuilders, and serious enthusiasts who want professional-grade results every time.