EXACT FACTORY SPECIFICATIONS: Includes 20 Pcs 1/2"-20 Lug nuts Bulge Acorn Style Lug Nuts ｜ 1/2-20 Threads ｜ 35mm 1.38" Long ｜ 13/16" 21mm Hex ｜ 60 Degree Conical Seat ｜ True 2 Piece Construction Heat Treated Carbon Steel Construction with Chrome Finish PRECISION FITMENT ENGINEERED FOR AFTERMARKET WHEELS. Compatible on vehicles with 1/2 x 20 lug nuts as found on Chevrolet 1975-86 C10 ｜ Dodge 1970-74 Challenger 1971-78 Charger 1994-2001 Ram 1500 ｜ Ford 1966-83 F-100 1975-96 F-150 1964-2014 Mustang ｜ GMC 1979-86 C1500 ｜ Jeep 1984-2001 Cherokee 1993-2010 Grand Cherokee 1987-2017 Wrangler 2018 Wrangler JK ｜ Plymouth 1969-74 Barracuda 1970-74 Cuda. Confirm capatability with AMAZON CONFIRM FIT. FOR AFTERMARKET WHEELS Only DESIGNED & TESTED IN USA: 13/16" 21mm 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 lug nut 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 no rust lug nuts. High quality Precise 1/2 - 20 lug nuts threads. Built to SAE Standards COMPLETE 20 Pcs SET: Full lug nuts set 21mm for four wheels. 1/2 x 20 lug nuts chrome 13/16 hex 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 1/2"-20 Thread Bulge Acorn 35mm 1.38" Long Lug Nuts Chrome 13/16" 21mm Hex Fits Ford Mustang ｜ Jeep CJ Wrangler Grand Cherokee