Check the listing for details. Do-It Downrigger Ball Sinker Mold, Sz: 12 lb. Condition: New. Listed at 118.70 USD. Do-It Downrigger Ball Sinker MoldPrecision engineered, this 2-piece mold is designed to give you a straight running ball. You will need your bench vise to stabilize the mold as well as heavier casting equipment. If you are looking to protect your boat finish and minimize the electrofield, try coating the balls with a multi-purpose rubber coating (e.g. Plasti Dip ) which can be found at your local hardware store.1 cavity (12 lbs)Insert: Downrigger Wire EyesDo-it Corporation is a 40-year-old company that is recognized as a world leader in the tackle craft industry. Do-it has built this reputation by manufacturing the highest quality jig, lure and sinker molds available. Each mold is cast from a high-grade warp resistant aluminum alloy and is warranted against manufacturer defects. The faces of each mold are machined smooth and flat to prevent flash. The style of any hook or insert is permanently marked on each mold. Each mold is inspected individually to ensure that all hooks and inserts fit properly. All hinges are machined to tight specifications to assure precision alignment. Highly durable, Do-it Molds are built to handle years of reliable use.