DPAccessories LCB4L3CP-BK05LK4 Black Wheel Locks 9/16-18 Closed End XL Bulge Acorn 3/4 & 13/16 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: Aftermarket wheels requiring a lug nut with a conical 60 degree seat and small diameter. Some applications may require the use of a thin wall socket. SPECS: 9/16"-18 thread - Closed End XL Bulge Acorn Style Locking Lug Nuts - Conical 60 Degree Seat - Dual Hex 3/4" and 13/16" - 1.88" long - 0.9" 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) black wheel locks and one (1) matching key.