Description: 1.25 inch 31.7mm Telescope extension tube M 42x0.75mm. Sutitable for Nikon Canon SonSy DSLR cameras. 1.25" Diameter T Adapter?suitable for standard 1.25" telescope and microscope. M42x0.75mm Threads?connect the T-ring mount and T-Mount. The inside of the adapter is fully threaded to minimize reflections. Specification: Material: Metal Size: 67mm/2.6" Thread: M42x 0.75mm (both ends, both inside and outside) Length: 61.5mm (excluding thread) Package Includes: 1 Piece Telescope Extension Tube
