3SDM's monoblock cast wheels are available in a number of sizes 16 to 22 inches depending on design. They are made from prime alloy ingot A356.2 aluminium. Tested to destruction at our R&D facilities, all 3SDM wheels pass rigourous Impact Test, Radial Fatigue, and Corner Fatigue before they go in to production. All 3SDM Wheels and tires Package includes FREE Shipping, FREE Mounting Tires and Free High Speed Wheel Balanced in 48 continental USA. Please contact us about More Info or assistance.