1. Seamless Connection: With a seamless connection, M42 and M48 accessories can be connected together.
2. Thread: One side is M48X0.75 male thread and M42X1 female thread, the other side is M42X0.75 male thread.
3. Premium Materials: Made of aluminum alloy material, accurate craftsmanship, strong, durable and resistant.
4. Easy Installation: This telescope adapter is easy to install, flexible to use, compact and portable.
5. Matting Treatment: The inner wall is treated with extinction to prevent the radiation from affecting the imaging.

Specification:
Item Type: Telescope Adapter Ring
Material: Aluminum Alloy
Large Male Thread Specification: M48x0.75mm
Large Male Thread Depth: 6mm
Small Male Thread Specification: M42x0.75mm (commonly Known As: T2 Thread)
Small Male Thread Depth: 4mm
Female Thread Specification: M42x1mm (commonly Known As: M42 Thread)
Female Thread Depth: 4.5mm

packing list:
1 xTelescope Adapter Ring