Sturdy Cast Iron Roller Chair with 4 Wheels - Perfect for Office, Home, and Industrial Use

'Roller Chair, Material of Construction Cast Iron, 4 In Pipe Size, Max. Load 750, Max. Temp. 450 Deg F At Roller, Width 6 5/8 In, Standards and Approvals A-A-1192A (Type 44), WW-H-171E (Type 45), ANSI/MSS SP-69 and MSS SP-58 (Type 44)'