Thread converters, needle valves
Thread reducer 5/16 SAE - 1/4" SAE V05 R410A"
1 x 1/4 " SAE External thread connection 1 x 5/16 " SAE Hollander connection
Adapter 5/16-1/4" (V02)"
1 x 1/4 " external thread connection 1 x 5/16" hollander connection 90 °