・ This is a set of 4 antistatic air valve caps. Antistatic system Antistatic Craftsman Antistatic Air Valve Caps These air valve caps are designed to discharge and neutralize static electricity around tires and wheels! We've researched and road-tested them to achieve a similar effect to Orbitron's titanium air valve caps, Geki Kantam's Ultimate Valve, and SEV air valve caps. They work well with antistatic goods like carbon discharge cables and reactors. We've tested them on various vehicles(^^)/. After repeated long-term road tests, we've settled on brass for the product, which is less prone to corrosion and sticking, unlike the lighter aluminum. Please compare with other manufacturers' materials. We've made numerous improvements and updates to enhance the effect. To ensure effectiveness even in heavy vehicles and SUVs, we've conducted road tests using a Mercedes-Benz G-Class for the current version, and for sporty cars, we've recently tested them on an 86 (ZN6)! Currently, we are testing them on a Town Ace (with a bad ride, lol) scheduled for delivery in October 2025. We'd like to boast about energy saving, improved fuel efficiency, torque increase, performance improvement, and improved response like high-priced & high-performance products, but we'd also like to avoid violating the Act against Unjustifiable Premiums and Misleading Representations (lol), so please read the reviews and compare. In this day and age, many people buy based on price alone... I feel that the "very bad/bad" ratings reflect the true user evaluations. If you are interested and sympathetic, please give it a try. #antistaticsystem's antistatic tuning parts are here Imitations, inferior products, and impersonators have also appeared. As a countermeasure, we apply a special treatment that imitation product vendors cannot replicate to further enhance performance. It may appear dirty or discolored, but this is due to the special treatment agent and does not affect performance; on the contrary, it improves performance compared to the old lot. Although it is an original product, we make it so that the effect is not inferior. I believe the performance is incomparable to antistatic washers (due to the impact on following vehicles in case of a fall, we do not recommend the use of antistatic (toothed) washers in conjunction with our product. Of course, we have made them small and powerful, so we do not create large types that might affect tire balance. Thank you.