W55175ST 12mm x 1.75" Spline Closed End Truck Install Kit Set of 20 Made of premium steel bar and triple chrome plated to help fight rust and provide a long lasting appearance Engineered with closely monitored specifications which ensures a proper fit and retention quality Installation kit for 5 lug applications Kit includes 20 each 12 millimeter x 1.75 inch spline designed truck application lug nuts with matching installation socket and 4 chrome valve stems