DPAccessories D5210K 6-Spline Installation Tool (Key/Adapter) for DP Brand 3/4" & 13/16" Lugs Lug Nut Installation Tool FITS: DP-Accessories 6-Spline Lug Nuts and Bolts. ALSO FITS: Gorilla Automotive Brand SD (Small Diameter) Lug Nuts (1921SD-KEY) SPECS: Dual Hex Sizes 3/4" (19mm) and 13/16". FEATURES: Triple nickel chrome plating to ensure long life by preventing rust and corrosion. Cold forged and heat treated steel for exceptional strength. INCLUDES: One (1) 6-Spline Installation Tool (Key/Adapter).