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Buddy bottle fill adapter 1/8" BSPP male to 1/4" BSPP female threads Fill your BSA buddy bottle from hand pumps or scuba tanks with 1/4" BSPP male threads If you fill your BSA R-10 MK2 or SuperTen buddy bottle with a hand pump or scuba tank that has a hose that ends in 1/4" BSPP male threads, this is the adapter you'll need.