Color coded pressure warning dust caps that screw onto standard tyre valve stems for quick visual checks. The caps let you see tyre condition at a glance so you can address low pressure before it becomes a bigger issue. Key benefits Instant visual feedback: color indicator shows normal, slightly low, or significantly low tyre pressure without removing the cap or using a gauge. Detects common pressure drops: yellow indicates the pressure is down by about 5 pounds; a distinct lowcolor indicates the pressure is down by at least 10 pounds. Simple and fast to use: screw on to the valve stem and check the color whenever you walk around the vehicle. Reduces guesswork: helps you determine whether to adjust tyre pressures to the correct level for your vehicle. Features and attributes Function: screwon dust cap with builtin color pressure indicator to monitor tyre pressure status visually. Compatibility: fits standard vehicle tyre valve stems used on most cars, SUVs, and light trucks. Size and design: compact, lowprofile cap that replaces factory dust caps without affecting tyre valve operation. Construction: durable, weather resistant design intended for regular onvehicle use and exposure to road conditions. Performance: provides clear indication of two common pressure loss thresholds so you can decide when to up tyres or inspect for leaks. Practical use scenarios Daily commute check: quickly confirm tyre condition before leaving for work by glancing at the caps during a morning walkaround. Road trip prep: verify all tyres show normal status before a long drive without stopping to check each tyre with a gauge. Fleet or maintenance programs: install on multiple vehicles to let drivers report tyre issues early and prioritize inspections. What you get A set of screwon pressure warning dust caps that standard valve caps and provide a simple, visual tyre pressure monitor. Instructions for use Screw each cap onto a clean valve stem until snug. Observe the cap color to determine tyre pressure state. If the cap shows the slightly low or significantly low color, check tyre pressure with a gauge and inflate to the correct pressure for your vehicle. This product offers a loweffort way to monitor tyre pressure trends and identify tyres that need attention without specialized tools.