This 1400 Series rigid Medium Duty caster with a Zinc finish features a 5" diameter wheel made of mold-on rubber and Roller bearings. It's 6-1/2" tall, has a 380 lb load capacity and a n/a swivel radius. It's mounted using a top plate mount with mount dimensions: 3-7/8" x 4-1/2" Bolt Hole 3-5/8" to 3" x 3" to 2-5/8".