The Hamaton Gun Metal Grey Clamp-In Valve is for use with Hamaton's U-Pro Hybrid 2.0 sensor and is designed to possess the same features and benefits as its alloy and black counterparts. The TPMS valve features an anodized coating to prevent corrosion from chemicals and road salt in winter. Its washer enables users to tighten the valve without scratching the alloy wheel surface and its nut-over-cap feature allows users to remove/attach the nut while the cap is on, reducing the time it takes to fit a sensor to a wheel, the company says.