This Set of 4 Brand New Heavy Duty Casters, Never Used, includes 2 fixed and 2 swivel with brakes. They have sealed bearings lubricated through a lube axle. They are 8" high overall, wheels are 6" in diameter and 2 1/2" wide. Attachment plate is 6 1/2" x 4 3/4" and bolt holes on plate have 1" x 1/2" opening. Picture below shows exact item being sold. If additional information is needed feel free to contact me through craigslist with any questions. These are very expensive industrial size, heavy duty casters, great for very large crates or tool boxes with a retail price of $175.00 +/- depending upon supplier. $300.00 for All or Best Offer. Send me a message through craigslist with any questions or I will be glad to provide my phone number upon request when you email to answer any questions or arrange time to meet if you would like to view them. If you know about casters, use them or need them, you know this is an excellent deal. Location: Broken Arrow it's NOT ok to contact this poster with services or other commercial interests oklahoma