The optech usa system connectors set of 2 is a uni adapter loop that is used to convert any optech neckshoulder strap to the uni loop quick disconnect strap system a small carrying handle can be created when the quick disconnects are latched together this item is made in the usa converts neckshoulder strap to the uni loop quick disconnect strap system small carrying handle can be created when the quick disconnects are latched together compatible with most optech