Model HQA-4 is a quick connect brazing torch handle with A-hose connections for use with air-fuel/acetylene. It is ergonomically designed with a super tough grip for balance and comfort. The connection fittings are 3/8 in - 24. This handle can be found in the Inferno Kits (PNs 4400083-4400084-4400085-4400086-4400087-4400088). It is designed to work with Harris' Inferno® tips.