certain facilities that are specified advanced forging nut technology and know-how that we have cultivated the KyoHisashi industry, and in the "JIS certified factory." That's all have built up a safe product with high quality. Has earned high trust and results from the user in the attitude and effort in this way insist on safety and quality. In addition, the distribution function is also to enrich, to respond quickly and accurately to the user's needs, the wheel nut lock that corresponds to the world of car you have to line up. Please refer to the manufacturer HP for calibration and more. http://www.kyoei-ind.co.jp/sangyo/