1.Strictly according to IATF 16949 quality certification system process production.   2.Each wheel lug nut or bolt to exact fastner standards using the latest equipment available on the market. 3.Using the latest cold forging technology to increase product strength and uniformity, our wheel nut and bolt meet or exceed OEM and aftermarket application standards. 4.Each wheel nut and bolt are hand-polished before plating, make the product to be plated to a perfect surface, specially formulated corrosion protection is applied to our chrome plated fasteners to meet or exceed the industry's standard salt spray testing. 5.We can provide a variety of color surfaces as long as customers are satisfied.6.Each wheel lock has a powerful anti-theft function, so that customers can rest assured. 7.Each wheel lock set with a key or two keys for Load or remove the wheel.8.Our wheel bolts design is suitable for most European models,all wheel lug blots are heat-treated to grade 10.9,our spline and tuner lug bolts are designed for the aftermarket for small diameter and deep bore wheels.9.Three layers of electroplating - two layers of nickel and one layer of chromium make our products durable in harsh road conditions.