compatible style will work with almost any brand of BCD with a 1 inch flex hose.Suitable compatible 2.5cm orifice intestine tube, suitable compatible BCD.Send 2 cable ties, including a drawstring to fix the steel needle.K-valve is easy to get stuck in sand and seawater crystals, so be sure to clean it carefully after going ashore.Colour: blackMaterial: nylon + metalSize: 65x99mmPackage Contents:1 * Submersible valve2 * StrapsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.