Suction fitting. For flare hose connection, use 8813218 adapter.The 8813265A Male Insert O-Ring Fitting, Rotolock, #10 (7/8") Hose fits equipment brands such as: Case, Case IH, Caterpillar, Claas, David Brown, Ford, Gleaner, International, John Deere, Massey Ferguson, Minneapolis Moline, New Holland, Oliver, Steiger, Versatile, White