[10 pcs.] 1/8" Steel Disc, 5" Diameter, .125 A1011 Steel, Round, Circle $33.0 Country/Region of Manufacture United States Brand Synergy Steel Designs condition New I am selling 1/8'' Steel Discs that are 5.00'' in diameter. A1011 steel. Steel may be 11ga, so thickness may be as thin as .119''. This listing is for a lot of 10 discs. Check out my other auctions - I can cut all sizes, shapes, and thickness of steel if needed. I would be happy to give you a quote. Please ask if you have any questions at all!