2" M48 Astronomical Telescope Extension Tube, T2 Extending Ring 3/5/7/10//12/15/20/30mm for Cameras and Eyepieces, M48x0.75 On Both Sides 1PC/Set (Size : 3mm 1pc)

Type: Astronomical Telescope M48 thread Extension TubeMale thread: M48*0.75mmFemale thread: M48*0.75mmOuter Diameter: 2 Inch(about 50.8mm）Color: BlackPackage Includes: as you choosePlease Note: This Combi are M48 (48mm) thread caliber, not M42 thread caliberSometimes you cannot get to the right focal plane for focusing with a camera or eyepiece. This extension tube kit solves this problem. You can use this extender with any camera or eyepiece or with various adapters. The M48*0.75 threads on both ends make it extremely versatile. Use this extender for obtaining the correct image scale or for the exact spacing required for a reducer or field flattener. You can reach the extension length required by combining several extenders of different lengths.

• Type: Astronomical Telescope M48 thread Extension Tube，Male thread: M48*0.75mm，Female thread: M48*0.75mm，Outer Diameter: 2 Inch(about 50.8mm）
• Extension Tube Height: 3mm 5mm 7mm 10mm 12mm 15mm 20mm 30mm，
• Fully metal construction and anodizing aluminum process, durable for long time use.
• Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners.solving spacing problems in astrophotography and eliminates a range of focusing problems.The required spacing can be achieved by combining several extenders of differing lengths.
• Easy to install and remove: It is easy to install and remove. you can use a screwdriver to connect the tube to the telescope frame, which is very suitable for beginners or professionals.