Pacific Rim BOLT ON MARINE SWIVEL JACK 1500 LBS 8" WHEEL ZINC 1,500 lbs rating - Includes bolt-on mounting bracket with mounting hardware 10" travel - Mounts to trailer frames up to 3" x 5" Extended - 35.25 inches / Retracted - 25.25 inches Bolt-on swivel jack with 8 inch caster wheel - Zinc plated with 100 hour salt spray rating Read product description below for more detailed information