Easy tyre inflation and deflation - Integrated valve core allows direct inflation, deflation, and air pressure control from the valve stem extension, solving the problem of not inflating or not checking tire pressure. Airtight seals for reliable operation - Durable rubber gaskets and sealing caps provide leak-free seals. To maintain efficiency, quickly tighten the cap after use. Durable and efficient air control - Made of rubber and brass with a dust cover, these valve stem extensions support simple air management for optimal pressure control and lasting performance. Increased access and easy installation - The steel wheel extension base rotates freely to provide easier access to valve stems on tyres. Installation is simple and requires no tools, reducing time and effort for servicing your vehicle. Use scenarios - Home garage or personal vehicle maintenance: quickly inflate or deflate tires and verify pressure without removing wheels or struggling with hard-to-reach valves. - Fleet or workshop service: efficiently service multiple tires across vehicles with improved access and straightforward installation. - Vehicles with limited valve access: reach valve stems more easily on wheels with deep rims or tight spaces, saving time during maintenance or repairs.