Quickly change valve stems with this tool kit, ideal for fixing leaky valves. Replace valve stems without disassembling tires. Features a solid steel construction and an industrial-grade nylon handle. Enables valve replacement in under 15 seconds. T-shaped hooks quickly remove the valve core. A cone-shaped positioning tube guides and aligns the valve core during installation. A metal push rod precisely inserts the valve core into the stem. Our engineers have rigorously tested and refined both the design and materials. Fits most valve stems with a 11.3 mm (0.453 inch) diameter. Not compatible with 5/8 inch (15.8 mm) valve cores or tires equipped with a Tire Pressure Monitoring System (TPMS). Suitable for cars, small trailers, light trucks, lawn mowers, single-wheel vehicles, ATVs, and motorcycles. Installation steps: 1. Deflate the tire. 2. Insert the T-shaped hook between the valve stem and valve core, then rotate to remove the core. 3. Place the new valve core onto the push rod. 4. Align the cone-shaped positioning tube with the valve hole and insert the core through the tube. 5. Rotate the push rod to release the core into place. Type: A Color: As shown Material: Metal Package includes: 1 set of tire valve tool Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.