These are stainless steel weights. They are available in 4-ounce, 3-ounce, 2-ounce, and 1-ounce sizes with 5/16 -24 thread.
Diameter is 1-1/4 inches.
Please see my other listing for screws not
included in this listing
Order individual quantities of weights as needed. You do not get all four as in picture order them individually by placing them in your cart.