Krowne Metal 28-139S Low Profile Threaded Stem Casters feature a durable swivel design with a brake for enhanced stability. Each caster has a 2" diameter and a 1/2"-13 x 1" threaded stem, making installation straightforward. With a robust load capacity of 200 lbs per caster, these casters are ideal for heavy equipment. They are grease resistant, ensuring longevity and ease of maintenance. Each caster raises the height of your equipment by 3", and they are sold in sets of four for complete mobility solutions.