These 90 degree Barb to Barb Elbows are great for splicing two pieces of flexible tubing together on an angle. Works best with spiral and vinyl tubing. It's recommended that hose clamps are used to secure the tubing onto the fitting in high pressure or external applications. This will prevent leaks from occurring. Parts material (white PVC, gray CPVC, black polypropylene) are selected based on best availability.