Lower mounting plates, leaf springs, 65-73. Sold as a pair. Feature heavy gauge steel construction and are designed to withstand greater toque required by heavier duty 1/2? U-bolts. Will not flex or bend under extreme use or heavy shock loads and is a perfect addition to your street car as well. Plates are slotted to accommodate all year rear end housings, including larger than stock 3? axle tubes. (Comes machined to accept Heavy-duty 1/2? U bolts.) Manufactured by Cobra Automotive.