This Low Profile Series swivel Specialty caster with a Zinc finish features a 2" diameter wheel made of polypropylene and Plain bearings. It's 2-27/32" tall, has a 300 lb load capacity and a 2" swivel radius. It's mounted using a top plate mount with mount dimensions: 2-9/16" x 3-5/8" Bolt Hole 1-3/4" x 2-15/16".