Heavy Duty TPR Rubber Caster Wheel with Swiveling Top Plate - 4-Inch - 300 lb. Load Capacity - Non-Marking for Use in Hospitals， Food Service， &amp; Other Institutional Applications<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Features gray non-marking rubber that is especially suited for Institutional Applications</li><li>Safe on Carpet， Concrete， Tile， &amp; Wood Surfaces</li><li>For Use On: Desks， TV Stands， Carts， Bed Frames， Dressers， Chairs， Tables， Stools， Toolboxes &amp; More</li><li>Top Mounting Plate: 4.48"x3.93" Bolt Pattern: 3.28"x2.76" Bolt Hole: 0.435" Overall Height: 5.61"</li><li>Includes: (1) Heavy Duty Rubber Caster， Wheel with Attachment Plate</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41pI06hHhKL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51eCAltqSUL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41OHoXsrgTL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/511Knb5SCeL.jpg" noproxy>