1、High Compatibility: Compatible with bed rails in both replacement for Tundra (TM) and replacement for Tacoma (TM), and works with other Pickup trucks, trailers, SUVs, boat with bed rails. 2、Stainless Steel Nut: The T slot nut is made of 304 stainless steel with excellent rustproof, for 3/8‑in16 threads, for d rings, racks, tie downs, custom cleats, etc. Hex head bolt is also made of 304 stainless steel. 3、Carbon Steel Anchors: Heavy duty tie down anchors are made of premium quality carbon steel with fully welded triangular rings, making the bolt strong and long lasting to use. 4、1500lb Tie Down Anchors: Used for securing ratchet rope, cam buckle straps, bungees cords, ideal to add tie down points to carry heavy loads, and protect you far away from cargo swing and noise. 5、High Accuracy: By threading a screw or bolt through the 13/32in diameter bolting hole (that's between 3/8in and 7/16in). With a 3/8in‑16 fully tapped and threaded hole, delivering endless attaching possibilities.