Shadow Conspiracy “Disaster” sprocket guards are a great way to protect your sprocket and chain, while maintaining a clean look. Simple installation and works with most sprockets on the market. Includes 19mm and 22mm adaptor. Weight: 1.9 oz. These guards will be available in 25t and 28t sizes. Colors will include black, red, perma blue, copper tye die, purple tye die, and polished silver.