DPAccessories LCS4N3HC-CH04LK4 Chrome Wheel Locks 9/16-18 Closed End XL Spline Locking Lug Nuts - Dual Hex 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 conical 60 degree seat and small diameter lug like a spline/tuner style nut. Will not fit factory OEM wheels. SPECS: 9/16"-18 thread - Closed End XL Spline Tuner Style Locking Lug Nuts - Conical 60 Degree Seat - 2.02" long - 0.91" wide REQUIRES: Unique security key with 13/16" and 7/8" hex 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.