In this schematic the "Clip" is used most often.
Parts such as the Carburetor Fittings (model T/v): Hose, 3-way, Clip, Spring are included in the Gsxr750 1999 (x) Carburetor Fittings (model T/v) parts fiche.
The lowest price component in this Carburetor Fittings (model T/v) parts-list fiche is the Screw.