The CURT line of trailer jacks is designed with care and manufactured with pride. CURT jacks are made with quality to promote the life and function of your trailer, and they come in several different styles to accommodate your needs, whether you are a frequenter of the boat landing, the campground, the racetrack or the field. Add stability and mobility to your trailer jack and trailer with a CURT jack caster. This hardy jack attachment features a simple safety pin mounting system and can be used on a number of CURT jacks and many competitive models. It features a 6 Inch poly wheel, has a weight capacity of 1,200 Pound and is designed for 2 Inch Diameter tubes.