Lezyne High-Pressure Floor Pump O-Ring Service Kit Description: The Lezyne High-Pressure Floor Pump O-Ring Service Kit includes the parts needed to refresh the performance of a Lezyne CNC, Alloy, Classic, Steel, or Sport series HP Floor Drive Floor Pump. Included in this kit are metal hose connector/nuts, a replacement hose swivel, and a piston seal O-ring. Installing these parts will eliminate blow by and/or leaks in the system and bring the performance of the floor pump back to what it was like when the pump left the factory. Features: Replacement piston seal O-Ring and hose swivel will eliminate leaks and blow by in the air chamber Metal hose connector/nuts included to replace damaged or missing parts