Pex Insert Brass 90° Elbows - B x B are designed for use in potable water distribution and hydronic heating systems, offering a reliable 90-degree connection between PEX tubing. Made from durable standard or lead-free brass, these barb x barb fittings ensure secure and leak-free performance. Ideal for residential and commercial plumbing, they are compatible with all types of PEX piping and meet industry standards for long-lasting, efficient installations.