StarPal M54x0.75 Metal Extension Tube Kit 4/5/6/7/8/9mm Focal Extension Rings for Astronomical Telescope Photography

This is the M54x0.75 metal extension tube kit. The kit includes 6 extension tubes, with lengths of 4mm, 5mm, 6mm, 7mm, 8mm and 9mm respectively. You can achieve the desired extension length by combining multiple extension rings of different lengths. Their outer diameter is 60mm, and the pitch is 0.75mm.Both internal and external threads are M54x0.75.

• Affordable price, includes a total of 6 extension tubes.
• Very sturdy and durable, made entirely of aluminum alloy, sturdy and durable,with an outer diameter as large as 60mm, it maintains stability even with heavy photographic equipment.
• By combining several extenders of different lengths, the required spacing can be achieved, which can effectively solve the spacing problem in astronomical photography
• Use this extension tube to obtain the correct image ratio or precise spacing required for the reducer or magnetic field leveler