Dutton-Lainson 3400 Tongue Jack, Pivoting, Zinc Finish 1200 lb 1200 lb tongue weight capacity (tongue weight is generally figured at 10-15% of gross trailer weight) Enclosed tube design protects moving parts from dirt and the elements 6" poly wheel, swivels out of the way for trailering Minimum manual cranking required because of swivel feature 11" travel, 24-1/4" maximum tongue height