Pex Insert Brass Couplings - B x B provide a secure and efficient connection for PEX tubing in potable water distribution and hydronic heating systems. Featuring a barb x barb connection, these couplings are crafted from high-quality standard or lead-free brass, ensuring durability and corrosion resistance. Ideal for residential and commercial plumbing applications, they offer easy installation and long-lasting performance in a variety of PEX piping systems.