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1/8'' M(BST) x 1/8'' M(BSP) Adapter
1/8'' M(BST) x 1/8'' M(BSP) adaptor used in joining filling hoses to the BST-1 micro coupler as well as the BST-1M nipple. Use this if you own more than one PCP and you want to quickly change filling nipples between different brands. The optional requirement for all American brands of air rifles/pistols.