M42x0.75 Metal Focusing Extension Tube kit 3/5/7/10/12/15/20/30mm Telescope Photography T-Ring

T2/M42 extension tube kit suitable for camera and eyepiece length 3/5/7/10/12/15/20/30mm M42x0.75 two sizesSometimes you can't get the correct focal plane to focus with your camera or eyepiece. This extension solves this problem. You can use this extender with any camera or eyepiece or various adapters. The M42*0.75 threads on both ends make it versatile. Use this expander to get the correct image ratio or the precise spacing required with a reducer or field flattener. You can achieve the desired extension length by combining several extenders of different lengths.

• 1. External thread-M42*0.75. Internal thread - M42*0.75 eliminates a host of focusing issues.
• 2. The extension tube has M42*0.75 internal thread and M42*0.75 external thread, which elegantly solves the spacing problem in photography.
• 3. Use this extension tube to obtain the correct image ratio or precise spacing required for a reducer or field flattener.
• 4. Full metal structure and anodized aluminum process, sturdy and durable, can be used for a long time.
• 5. The required spacing can be achieved by combining multiple extension rings of different lengths, you can use 1, 2, 3, 4, 5, 6, 7 or 8 extension rings as needed.