(4) 7/16 Chrome Closed Spline Locking Lug Nuts/Wheel Locks 7/16" + Spline Key Retail Packaging. All wheel locks include 4 lock nuts and 1 key adapter. Dual Hex Socket Key (3/4 and 13/16) Lug nuts are cold-forged and thru-hardened for increased strength. Spline drive fits small diameter recesses. Closed-end design prevents rusting. Spline style provides added torque during installation and removal.