This Composite PTC Manifold Union is a standard, compact fitting designed for composite (PBT) bodies. It's available in two tube OD options: 3/16" and 4 mm, with air fluid compatibility. Suitable for polyurethane and nylon tubing, it features quick connections, reusable design, and durable construction. It includes an O-Ring & Packing Material, back ring, lock claws, and stainless steel collar. The sleeve design allows for easy, ergonomic tube release, and it's compatible with hexagonal and Allen wrenches for flexible tightening.