EXACT FACTORY SPECIFICATIONS: Includes 20 Pcs Bulge Acorn Style Lug Nuts with M12x1.75 12x1.75 Threads ｜ 1.38" 35mm Long ｜ 3/4" 19mm Hex ｜ 60 Degree Conical Seat ｜ True Two-Piece Heat Treated Carbon Steel Construction with Chrome Finish PRECISION FITMENT ENGINEERED FOR AFTERMARKET WHEELS. Compatible on vehicles with M12x1.75 12x1.75 threads as found on Ford 1997-99 Expedition 1997-99 F-150 1998 F-250 ｜ Lincoln 1998-99 Navigator Confirm compatibility with AMAZON CONFIRM FIT. FOR AFTERMARKET WHEELS Only DESIGNED & TESTED IN USA: 3/4" 19mm Hex Bulge Acorn Lug Nuts. Two-Piece design ensures reliable clamping force and long‑term durability under daily driving conditions. RELIABLE PERFORMANCE & CORROSION RESISTANCE: Premium multi‑layer Chrome coating tested for 72‑hour salt‑spray corrosion protection. Ideal upgrade for your vehicle. Designed for RAINY climate and AFTERMARKET wheels. Cold Forged carbon Steel. High quality Precise M12x1.75 12x1.75 threads. Built to SAE Standards COMPLETE 20 Pcs SET: Full lug nuts set for four wheels Chrome Lug Nuts with 60 Degree Conical Seat ready for direct installation. Upgrade now to your vehicles appearance and the safety you are looking for. Wheel Accessories Parts 20 Pcs M12x1.75 12x1.75 Thread Bulge Acorn 1.38" 35mm Long Lug Nuts Chrome 3/4" 19mm Hex Fits Ford F150 F-250 Expedition ｜ Lincoln Navigator