21mm Extension Ring M54/M54 (M/F) - ZWO
21mm Extension Ring M54/M54 (M/F) - ZWO
SKU: zwo-zwm54m-m54f-21mm
Available within 7 days
Unable to load pickup service availability
The ZWO 21mm Extension Ring Adapter M54/M54 (M/F) allows you to add 21 mm to a ring that has a male M54 thread. This helps to achieve the desired backfocus, particularly when replacing a ZWO filter wheel in a setup with a ZWO ASI2600 camera. Made of aluminum with black anodization for increased durability.
- Adds 21 mm to the male M54 thread
- Female M54 input thread / male M54 output thread
- Aluminum construction with black anodization
- Allows customization of your setup's backfocus
- Compatible with ZWO ASI2600 equipment and other accessories with M54 threads
- Durable due to the black anodized aluminum construction
- Compatible with all standard tripods and accessories that have M54 threads
- 21mm Extension Ring Adapter M54/M54 (M/F)


We clean up after ourselves.
Ecommerce deliveries have a carbon footprint. That's why we support verified projects that remove carbon from the air.
Every delivery’s carbon footprint is calculated based on weight, shipping method, and distance traveled. We neutralize these emissions by purchasing verified carbon removal credits from groundbreaking projects. When you add a contribution to your order, 100% of that money is used to pay for additional carbon removal.


With your purchase, you’ll join a community of proactive merchants and customers dedicated to a sustainable future. Together, we've removed emissions for over 50 million deliveries and removed over 37 thousand tonnes of carbon.
We work with a network of pioneering carbon removal companies that have been vetted by the commerce platform Shopify.

