The adapters are used to accommodate different threads on canisters and barrels, such as when attaching barrel pumps.
BROWN (2" BSP fine thread, female/ DIN 71, female)
GRAY (2" BSP fine thread, female/ DIN 61/31, male)
BLACK (2" BSP fine thread, male/ DIN 61/31, male)
YELLOW (2" BSP fine thread, female/ DIN 61/31, female)
WHITE (2" BSP fine thread, female/ ASTM Ø 63mm, female)
RED (2" Mauser coarse thread, female/ Trisure coarse thread, male)
ORANGE (2" BSP fine thread, female/ Trisure coarse thread, male)
BLUE (2" BSP fine thread, female/ 2" Mauser coarse thread, male)
GREEN (2" BSP fine thread, female/ DIN 51, female)
SET all 9 adapters listed above.