Gorilla Automotive (71631X) 12mm x 1.50 Thread Size Acorn Chrome X2 Wheel Lock, (Pack of 4) Patented Dual-Stage Technology Upper Lock Stage is Free-Spinning and protects the Lower Stage from removal tools Hardened Steel construction for Security and Durability Chrome Plated for Beauty Includes Dual Hex Key (3/4" and 13/16" Hex sizes)