MOTOCOCHE piston ring compressor set includes 1 pliers and 14 piston rings, which are mainly used to install the piston ring in the compression cylinder. The diameter range of the piston ring is 62-145mm/2.4-5.7inch. 14 kinds of diameters are suitable for different types of motors, practical and convenient. Fine-tooth Ratchet Pliers The fine-tooth ratchet pliers can be used flexibly and can be parallel or perpendicular to the cylinder block for precise compression, saving time and effort. 14PCS Piston Rings The piston rings has 14 sizes for you to choose from. It is suitable for different types of motors and is an indispensable tool for mechanics, tractors, cars, trucks, racing cars and diesel engines. Plastic Tool Case Piston ring compressor kit is equipped with a blow molding tool box. The inlaid storage reduces the wear and tear of the tools and is convenient to carry to various working places. Specifications: Material: Manganese steel and iron Diameter Range of the Piston Ring: 62-145mm/2.4-5.7inch Packing size: 27*22*5cm/10.6*8.6*1.9inch Weight: 1.47kg/3.24lb Packing List: 1 x Fine-tooth Ratchet Plier 14 x Piston Ring 1 x Plastic Tool Case