These shift knobs are 11oz… in other words, just a little less than a pound. They are powder coated for an extremely durable and easy to clean finish (the black & army green knobs are ceracoated). They thread on, and are available in sizes 10×1.25, 10×1.5, 12×1.25, and 12×1.5. Google your car to see what size you need. More info, more photos, and more color options here.