Model of SPV 04 is 4mm x 4mm tubing union elbow stainless steel 316 push in air fittings, L shaped body which is made of high grade 316 SUS, designed to connect two pneumatic tubes of equal diameter of 4mm at right angle. 4mm stainless steel union elbow is suitable for use with nylon, polyurethane, polyethylene or Teflon tubing and can be used with steam, oil, water and other fluids.