1. Seamless Connection: This telescope adapter ring features seamless connection, M42 and M48 fittings can be connected together.
2. 0.75mm Thread: This M42 to M48 coupling ring adapter possesses M42x0.75mm external thread and M48x0.75mm internal thread.
3. Aluminium Alloy: This M42 to M48 ring adapter is made of aluminium alloy material, sturdy and .
4. Easy Installation: This telescope adapter ring can be easily installed, very flexible and convenient to use.
5. Extinction Treatment: The inner wall of this telescope lens filter ring adapter adopts extinction treatment, avoid radiation affecting the image.

Specification:
Item Type: Telescope Adapter Ring
Material: Aluminium Alloy
Internal Thread Specification: M48 x 0.75mm
External Thread Specifications: M42 x 0.75mm (Commonly Known As T2 Thread)
Thread Depth: 3mm
Flange Distance: 4mm
Total Length: 7mm
Diameter of Inner Hole: 39mm
Outer Frame Diameter: 50.7mm±0.1mm

packing list:
1 xTelescope Adapter Ring
1 x Plastic Storage Box