Sold as a set of two keepers Valve keepers for 125cc GY6 QMI152/157 and 150cc GY6 QMJ152/157 engines These valve keepers are used on a wide variety of scooters and ATV brands and models that have Chinese built 125cc GY6 QMI152/157 and 150cc GY6 QMJ152/157 enginesDescription Valve keepers for 125cc GY6 QMI152/157 and 150cc GY6 QMJ152/157 engines. These valve keepers are used on a wide variety of scooters and ATV brands and models that have Chinese built 125cc GY6 QMI152/157 and 150cc GY6 QMJ152/157 engines.These valve keepers are sold in pairs. WARNING California Residents: Proposition 65 Warning Specifications Length: 5.75 mmWidth: 8.3 mm tapering to 7.65 mm