Brass QD Coupler with poppet check stop prevents leaks with disconnected. Used on smaller carpet cleaning machines like the Durrmaids brand and a select few others. Has a 1/8" Fip threaded hole for mounting. 1/8"-27 NPTF Compare to current or past OEM associations: PMF QD35 Esteam 580-105 Parker PAF03 Powrflite PC10 Eaton Hansen B1K11 Brass ISO-B Interchange Hydraulic Fitting, Plug with Valve UNSPSC Code 40141734 20161130djc