This set includes 20 ,24 or 32 piece set of 9/16"-18 duplex spline tuner style chrome plated lug nuts with key. The hex key has both 3/4" and 13/16" head. The lugs are heat treated to achieve extra strength. Our application guide page will answer most of your application fitment questions but do not hesitate to ask us. Sold in complete set. Extra duplex keys are available from accessories section on the right.