3/8 Male Iron Pipe X 5/16 Dual MasterThe 3 8 Male Iron Pipe X 5 16 Female Inverted Flared Dual Master Cylinder Adapter is a precision engineered connector designed for secure and efficient fluid transfer. Crafted from high quality, durable materials, it ensures a leak free connection between male iron pipe threads and dual master lines. Specification Details TYPE Male Iron Pipe X Dual Master DESIGN Heavy Duty Construction made from high strength materials for durability and long lasting