Product details:

The SuperTruss Extension comes in eight lengths from 21 inch to 60 inch and works exclusively with SuperHitch or SuperHitch Magnum. Its rated to safely tow up to 14,000 lbs. and 1,400 lbs. tongue weight on a 21 inch extension and 12,000 lbs. and 1,200 lbs. tongue weight on a 48 inch extension.