This 100 Series rigid Light Duty caster with a Zinc finish features a 2" diameter wheel made of soft rubber and Plain bearings. It's 2-1/2" tall, has a 90 lb load capacity and a n/a swivel radius. It's mounted using a top plate mount with mount dimensions: 1-1/2" x 2-21/32" Bolt Hole 15/16" x 2-1/8".