This is a used Acura genuine OEM wheel lock set with a 19mm socket size. The wheel lock set has a 12mmx1.50 thread size and is made of chrome-finished steel. The part number is 08W42-S6M-202. Please note that there is no manufacturer warranty included with this product. I have a large quantity of these and you may not get the pictured pattern of lock. But everything will match in each set. There may be rust or corrosion on some of the sets. A quick wipe down and polish will have them shine like new.