Specifications: 1/2, 1/2", 1/2-20, 1/2"-20 - Open end bulge acorn style lug nut - 60 degree cone seat - 3/4", 19mm. Lug nuts have two compatibilities, one to match the lug nut thread size to the vehicle's wheel studs and the other to match the lug nut style to the wheel.
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