Thread adapter set for Pump-it canister pump, consisting of: Adapter outer/outer, 2 in. coarse Mauser - 64mm (BSI), green;Adapter outer/outer, 2 in. coarse TriSure - 64mm (BSI), brown;Adapter outer/outer, 2 in. BSP - 64mm (BSI), blue;Adapter outer/inner, 64mm (BSI) - DIN 60, black;Adapter outer/inner, 64mm (BSI) - DIN 51, black.