Fits many different Bing carburetors, for example:
Ring float carburetor SRE 10-15mm & SRF 14-17mm
Side float carburetor SSF 15mm/SSH/SSI 9.5-15mm
As well as the more modern carburetor types 15/17/18
Puch/Zündapp/Kreidler/Zweirad Union/Sachs/Ilo and others