GTP-992-4FA -Quick Disconnect Coupler - 1/4" Female NPT Aluminum NSN# 4730015955684
GTP-992-4FS -Quick Disconnect Coupler - 1/4" Female NPT Stainless Steel
GTP-992-2FA -Quick Disconnect Coupler - 1/8" Female NPT Aluminum
GTP-992-2FS -Quick Disconnect Coupler - 1/8" Female NPT Stainless Steel
For more information see Bulletin No. 3.