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A compact metal ring with a 1/4-20 female thread for joining PRO25 and PRO50 extension tubes

NovoFlex

NovoFlex Pro Ring 1/4-20 Female Connector for PRO25 PRO50 Extension Tubes

SKU CH-KCY3-WZ8N6

Connects PRO25 and PRO50 extension tubes with a 1/4-20 female thread for increased macro magnification

  • Secure extension-tube joins via 1/4-20 female thread
  • Precise alignment with PRO25 and PRO50 tubes
  • Female-to-female design expands macro configurations
  • High-quality build withstands demanding shooting conditions
  • Mounts to QR plate for focus control with CASTEL accessories

NovoFlex Pro Ring 1/4-20 Connector

The NovoFlex Pro Ring is a 1/4-20 female connector built to join BALPRO PRO25 and PRO50 extension tubes. It suits macro photographers who need to combine tubes for greater magnification. The accessory adds a sturdy link between components without introducing play or misalignment.

Tool-free installation with standard threads

The connector mounts effortlessly to a quick-release plate and threads directly onto the extension tubes using the 1/4-20 interface. No special tools are required for assembly. The main risk is cross-threading the fine pitch if the parts are forced together before the threads engage cleanly.

Female-to-female 1/4-20 thread specification

The single deciding specification is the female-to-female 1/4-20 thread that matches the PRO25 and PRO50 tubes exactly. If your setup uses a different thread pitch or a male mount, this ring will not fit. It is not for users who need a male-to-male coupler or a different thread standard.

Highlights

  • Secure extension-tube joins via 1/4-20 female thread
  • Precise alignment with PRO25 and PRO50 tubes
  • Female-to-female design expands macro configurations
  • High-quality build withstands demanding shooting conditions
  • Mounts to QR plate for focus control with CASTEL accessories

Specifications

No published specifications for this item yet.

Questions about this item

How can I verify the 1/4-20 female connector is securely joined to my PRO25 and PRO50 tubes after setup?

The connector mates firmly with the threads on both the PRO25 and PRO50 extension tubes; check that no gap remains and the joint does not rotate under light pressure.

What comes in the box and which items must be purchased separately?

The package contains the Pro Ring 1/4-20 female connector only; PRO25 and PRO50 extension tubes, QR plates, CASTEL-MINI-II or CASTEL-Q focus units are sold separately.

Which Novoflex extension tube versions does this connector fit?

It is designed for the PRO25 and PRO50 BALPRO extension tubes; other tube models are not supported.

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