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.