We have changed These “A stands” over to A36 mild steel to make them less expensive for our customers. They are the most versatile stands on the market! They use easy to come by 3/4” emt conduit or equivalent for the legs. You can use a 2×4 for the cross member or anything from 1/2″ – 1″ in diameter in one of the 4 corresponding holes. The hooks where specifically designed to fit perfectly over a 2×4 and still work with a round cross member. Now comes with our quick kit for emt conduit.