The BulletProof Heavy Duty Weight Distribution Adapter allows you to attach a weight distribution system to any steel Medium, Heavy or Extreme Duty BulletProof Hitch?. After modifying your vehicle's suspension and/or adding larger tires, you may need a hitch with a longer drop. This accessory is compatible with most weight distribution systems. The adapter is 2? wide and the holes on the weight distribution adapter are 3/4" in diameter and spaced 1-1/4" on center. Rated to 6,500 lbs. trailer weight & 1,500 lbs tongue weight when used with any steel Medium Duty BulletProof Hitch?. Rated to 22,00 lbs. trailer weight & 3,000 lbs tongue weight when used with any Heavy or Extreme Duty BulletProof Hitch?. Note: One BulletProof Locking Pin is compatible with the Heavy-Duty Weight Distribution Adapter. Please note locking pin MUST be used in either center hole ONLY. PATENT US D997,037S