Why Choose Us? Easy to Install Installation is easy by sliding the U-bolt over the hitch bar, sliding the tightener plate into the bolt, and tightening it in place with the included hardware. Top Materials Heavy duty anti-rust forged steel for increased durability double safeguard Install Instruction 1. Drop the U-Bolt and slide it to touch the face of the hitch. 2. Push the tightener plate onto the U-Bolt with the raised end away from the hitch. 3. Have the washer, lock washer and nut to one side of the U-Bolt. Hand tighten nut to hold washers in place. 4. Tighten the nuts evenly until the metal plate is tight to the stinger and hitch. Check the nuts periodically to ensure that they remain tight. Package Include 1 Rubber Isolator 1 High-strength Anti-rust U-bolt 1 Tightener Plate 2 Locking Nuts 2 Spring Lock Washers 2 Nylon Lock Nuts