DPAccessories LOB2L9HC-CH04LK4 Chrome Wheel Locks 14x2 Open End Bulge Acorn 19mm & 21mm Locking Lug Nuts Wheel Lock Set UPGRADED SECURITY FOR WHEELS & TIRES: Our unique key-to-lock combinations will help guard your wheels and tires against theft. Recommended installation is one locking lug nut per wheel. FITS: Light trucks with M14x2.0 thread studs and aftermarket wheels that take a conical 60 degree seat with 19mm or 13/16" (21mm) hex. Intended for installation on longer wheel studs or wheels with center caps that cover the lug nuts. SPECS: M14x2.0 thread - Open End Bulge Acorn Style Locking Lug Nuts - Conical 60 Degree Seat - Dual Hex 19mm and 13/16" (21mm) - 20.32mm long - 22.86mm wide REQUIRES: Unique security key for installation and removal. One (1) key included with this set. For replacement keys contact DP-Accessories with your original key number. INCLUDES: Four (4) chrome wheel locks and one (1) matching key.