Tee, Clamp-On, 1-1/4 in, 90 deg, Case Hardened Steel, Iron, Galvanized, Gray , 1.72 in ID, 42.4 mm OD

Widely used for adding to and modifying existing structures. This performs the same function as a Type 10, but because of its open socket, it can be added to a complete structure. For an alternative fitting, see type A10. Type 25 should be used when a join in the tube is necessary.