These tie rods adjusting sleeves are made from high quality machined steel and are as tough as you can find on the market today. They are coated with a chemical resistant and weatherproof coating to make them last under even the harsh conditions of a racetrack. (For those of you that do not know, small debris at 200 mph does amazing damage.) The studs are also welded in place so they will not turn when tightening the lock nuts. This allows for proper torque on the lock nut which helps prevent the nut from coming loose and allowing your suspension settings to change. These are a very high dollar parts that are normally only purchased by the deep pockets of a NASCAR race team. These tie rod sleeves have 3/4-16 RH and 3/4-16 LH threads, which is a common size found on many production Ford, Chevy, and Dodge vehicles as well as racing applications. These are some of the best that money can buy and they will not last long at this price. The cheap production car service parts sell for $9 each at your local parts store and they are nowhere near the quality you see here We are selling these parts at a fraction of their regular price. These are Brand New parts that were sold as surplus. They are in perfect shape and ready to install. If you want suspension parts that can hold up to 200 mile an hour speeds in the turns, look no further! Please take minute to see our other items for more great deals.