The SVBONY SV157 1.25 "extension tube is threaded at the end to accommodate a standard 1.25" filter. It is made of all-metal material and has a long service life. The inside of the SV157 has full threads to reduce reflected light.
Svbony fully metal T2 extension tube kit length of 8mm 25mm 45mm with M42 thread
The Variable Extension Tube is an all-metal structure and anodized finish, so it has a long service life. It has internal T2 threads and external T2 threads, with a variable extension of 24-35mm.
Svbony extension tube kit of M48x0.75 thread 5mm 10mm 15mm 30mm for solving spacing problems in astrophotography
Svbony SV129 extension tube kit with M42 thread of 5mm 10mm 30mm suitable for astrophptography
Svbony fully metal M42 extension tube kit of four different length of 5mm, 10mm, 15mm, 20mm
Svbony spotting scope could work with Canon or Nikon camera, then you will need this Svbony photography extension tube.