Gorilla Automotive 21631BCB5 Black 12mm x 1.50 Thread Size Chrome Finish Small Diameter Acorn Wheel Lock, (Pack of 5) Locks are made from hardened steel and Black chrome plated for beauty Unique external security pattern Chrome Vanadium Dual Hex Socket with 3/4" and 13/16" Hex Narrow lock and key fit in virtually all aftermarket wheels Includes 5 Wheel Locks and One Dual Hex Key (3/4" and 13/16" Hex sizes)