WheelGuard 1954 , Bulge Acorn Lug Nut, 1/2-20, 3/4" Hex, Chrome Plating (20 Lug Nuts)Category: Metric Lug NutWheelGuard? closed end bulge acorn style lug nuts are among the best in the industry. Our bulge acorn style nuts are crafted with precisely machined threads to ensure a perfect fit to your vehicle's wheel studs. Manufactured with cold forged steel for dependable strength and durability. These lug nuts feature premium chrome plating with essential layers of copper, nickel, and chrome to provide exceptional strength, beauty, and corrosion resistance. Our lengthy multi-point quality control process ensures that every nut we handle is created with the same love and care as the one before it.WheelGuard lug nuts feature a two-part safety design. Top-part is welded on the base hex part. Uniform chrome plating makes them look just like one-piece nuts. A two-part nut is also referred to as a "safety" nut. Meaning if a stud is too long the top part of the nut will pop off, but the nut will still go to the end and secure the wheel. Whereas a one-piece nut won't and leaves people with a false sense of security that the nut has properly seated even though it isn't. Through our 20+ year experience in manufacturing lug nuts, we observed many cases in which improperly seating of one-piece nuts on longer studs. Many cases resulted in an accident because if nuts are not well seated, wheel will apply a strong shear force on the studs and eventually cut them off, instead of a pulling force that studs are designed to bear.