Y-adapter coupling, AN-8 (1x) to AN-8 (2x)Y adapter fitting, allows you to combine or split a single line into two. Small adapter with low weight and pre set size of inlet outlet. These adapter Coupling are often used when combining or determining fuel oil air lines without any major flow loss. Lightweight version with pre set threads on both ends. Available in multiple versions, be sure to select the preferred one when placing your order. Available in different versions and sizes: Y Adapter