These manifolds are built to last. Available in 2 and 4 way, included are high quality stainless steel hosetails. These manifold are designed to accept 8mm/3/8" air line.
Perfect for use with air being directed to bottom drains & larger air stones/membranes.
To connect the manifolds to your air pump, the flexible rubber elbow (usually supplied with the air pump) will stretch over the manifold. From there, simply use air line to connect to your air stones etc.