This is a New ( nos)  in package HONDA OEM Bleeder Screw Cap
 Fitment below is provided as a guideline, please satisfy yourself this will work with your intended application.  Thanks 

Fitment:
1977 CB750F A - FRONT BRAKE CALIPER
1977 CB750F A - REAR BRAKE CALIPER
1977 GL1000 A - FRONT BRAKE CALIPER
1977 GL1000 A - REAR MASTER CYLINDER / CALIPER
1978 CB750F A - FRONT BRAKE CALIPER
1978 CB750F A - REAR BRAKE CALIPER
1978 CX500 A - FRONT BRAKE CALIPER
1978 GL1000 A - FRONT BRAKE CALIPER
1978 GL1000 A - REAR BRAKE CALIPER
1979 CB750F A - FRONT BRAKE CALIPER
1979 CB750F A - REAR BRAKE CALIPER
1979 CBX A - FRONT BRAKE CALIPER
1979 CBX A - REAR BRAKE CALIPER
1979 CX500 A - FRONT BRAKE CALIPER
1979 CX500C A - FRONT BRAKE CALIPER
1979 CX500D A - FRONT BRAKE CALIPER
1979 GL1000 A - FRONT BRAKE CALIPER
1979 GL1000 A - REAR BRAKE CALIPER
1980 CB750F A - FRONT BRAKE CALIPER
1980 CB750F A - REAR BRAKE CALIPER
1980 CB900C A - FRONT BRAKE CALIPER
1980 CB900C A - REAR BRAKE CALIPER
1980 CBX A - FRONT BRAKE CALIPER
1980 CBX A - REAR BRAKE CALIPER
1980 CX500C A - FRONT BRAKE CALIPER
1980 CX500D A - FRONT BRAKE CALIPER
1980 GL1100 A - FRONT BRAKE CALIPER
1980 GL1100 A - REAR BRAKE CALIPER
1980 GL1100I A - FRONT BRAKE CALIPER
1980 GL1100I A - REAR BRAKE CALIPER
1981 ATC250R A - FRONT BRAKE CALIPER
1982 MB5 A - FRONT BRAKE CALIPER