Style 20pcs 2″(50mm) 7 Spline. Spline: 7 Spline. Includes – Set of 20 acorn lug nut + 1 lug nut key tool. Seat: Conical 60 Degree Seat. Improperly installed hardware may cause the 6 spline lug nuts to break or loosen during driving, which may result in an accident.