Key Features Elbow joint for extending airline Suitable for biOrb aquariums Compatible with all biorbs Fits all biOrb airline tubing Durable L shape design Pisces airline elbow Shape joint connector to use with your Oase biOrb tanks and airline tubing. The biOrb elbow joint can be used to help extend your airline tubing, with the L shape design enabling you to have the tubing move around corners and hard to reach areas. Specifications Fits: All biOrb airline tubing Size: 22mm x 17mm