DPAccessories D5110K/5 Set of 5 Duplex 6-Spline Installation Tools (Keys) for DP 13/16" & 7/8" Lugs Lug Nut Installation Tool FITS: DP-Accessories Duplex Series 6-Spline Lug Nuts. ALSO FITS: Gorilla Automotive Brand Duplex SD Lug Nuts (1378SD-KEY) SPECS: Dual Hex Sizes 13/16" and 7/8" (22mm). FEATURES: Triple nickel chrome plating to ensure long life by preventing rust and corrosion. Cold forged and heat treated steel for exceptional strength. INCLUDES: Five (5) Duplex 6-Spline Installation Tools (Keys).