Product Information Material: Zinc Plated Steel Female Thread: NPT Select a Product Part NumberDescriptionFemale Thread Size GWHC-FFFull flow grease hose coupler1/8"- 27 GWHC-FFRFull flow grease hose coupler (Retail Pack) 1/8"- 27 GWHCRGrease hose coupler with ball check- valved shutoff (Retail Pack)1/8"-27