Overview Product Description Buyers Products Union Tees are made of long lasting corrosion-resistant brass. They are designed to meet DOT FMVSS 571.106 air brake performance specifications. Product Videos Custom Field Shipping Free shipping on orders $100+ Product Reviews Write a Review Write a Review × Buyers Products Co. BUT0P375 - Brass DOT Push-In Union Tee 3/8 Inch Tube O.D. Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *