The Baer "Tracker" adjustable tie-rods feature 6061 T-6 aluminum, fully machined sleeve with a black anodized finish, a Teflon lined 5/8" heim joint and 4140 steel pin which. The pin is machined with the correct taper so no modification to the OE spindles is required and then heat treated. The Trackers Tie Rods are vehicle specific, mounting to the OE inner tie rod and offer approximately .875" of adjustment at the spindle to help correct bump steer issues due to modified suspensions and/or poor OE design. Best of all these are made in the USA!