2” dia. with square hole for 1/4” diameter stem (1903 -1905 Stanley)
Lace pattern valve wheels as used on early Stanleys, Whites and other steam cars. Absolutely authentic shape and thickness, but made from non-tarnishing and rustproof, electro polished 18-8 stainless steel. No nickel plating to go dull, peel off, pit or chip when peening onto valve stem.