SVBONY SV109 Variable Thread Extension Tube
【Eliminate focus problems】The inner thread of the extension tube is 0.75 and the outer thread is 0.75, which elegantly solves the spacing problem in astrophotography and eliminates a series of focusing problems. Comes in M42 or in M48 size.
【Variable Combination】The desired spacing can be achieved by combining several extenders of different lengths Use this extension tube to obtain the correct image scale or the exact spacing required by the reducer or field flattener.
【Aluminum alloy material】High-quality all-metal structure and anodized aluminum process, durable.
【Eliminate Excessive Light】The internal thread design can eliminate stray light and reflected light, making the image clearer and more perfect.

- The Black color SV109 extension tube has a T2 interior thread and a T2 exterior thread for solving spacing problems in astrophotography and eliminates a range of focusing problems
- Full metal construction and anodizing aluminum process, durable for long time use
- Use this extension tube can get the correct image scale or the exact spacing required for reducers or field flatteners