Description
Description:
Prevents unlock standards from sliding off when a rail extension is used as the basic rail unit.
Condition details:
Cosmetic: Light wear.
Mechanical: Fully working.
Graded: Excellent Plus
(Signs of light use, but not misuse. )


![Sinar Monorail Rail Cap. For Norma F2 P P2 etc. Graded: EXC+ [#9825] - Image 3](https://www.camleyphotographic.com/wp-content/uploads/2022/01/dsc_2209.jpg)
![Sinar Monorail Rail End Cap in Chrome (429.11). Graded: EXC- [#11615]](https://www.camleyphotographic.com/wp-content/uploads/2024/05/dsc_6718-500x333.jpg)
![Sinar 45cm 18inch Chrome Extension Rail Monorail (424.11). Graded: EXC+ [#20136]](https://www.camleyphotographic.com/wp-content/uploads/2025/06/2025-06-17-14-17-02-500x375.jpg)
![Sinar Monorail Extension Rail - 6 inches. Chrome (421.11). Graded: EXC [#20116]](https://www.camleyphotographic.com/wp-content/uploads/2025/06/2025-06-17-14-24-49-500x375.jpg)
![Sinar Front-Surfaced Mirror Large Format 4x5 (538.11). Graded: EXC [#10358]](https://www.camleyphotographic.com/wp-content/uploads/2022/03/dsc_4715-500x332.jpg)