King Size Metal Bed Frame with Casters Carpet Rollers and Headboard bracket attachments. Instamatic Bed Frame built strong. Easy Assembly (No tools are required) This bed frame has heavy duty side rails with protective end caps. Extra Wide Headboard brackets allow easy attchment of most standard size headboards For use with a standard king (76" x 80") size mattress and boxspring or foundation. 6 Sturdy Legs with Casters / Carpet Rollers, 2 of which can be locked to keep bed in place