A female connector for receiving a male connector includes a housing, a support ring, a clip, and a clip blocking member. The male connector includes a groove. The housing includes an outer surface and housing openings. The support ring includes support ring openings. The clip includes an operation portion between a pair of clip legs. The pair of clip legs can pass through the housing and support ring openings. The clip blocking member is located outside the housing and has a pair of blocking faces which face the pair of clip legs. When the groove aligns with the housing and support ring openings, the pair of clip legs enter the groove, and the operation portion moves to a travel end position. In the travel position, the distal ends of the pair of clip legs are between the pair of blocking faces and the outer surface.