Inner diameter 46.4 mm ,thickness 15mm .It can hold normal M42 extension tubes with 46 mm~46.3 mm.Or the 42 tube we special made for this clamp.Tools
Tube clamp - Swivel Base Plate Typ 50 Cast iron
Thorlabs ITL200 adapters help needed - Page 2
Tube clamp (46C) – Wemacro Rail
Ed Martin MF-Sampler
American Grease Stick 90 Degree Elbow PTF-46B
new arrival – Wemacro Rail
Raynox DCR 150 tube lens (Pro) Includes three mounts – WeMacro in US
Mounting set Leuze BTU 300M-D12 - 50117252
Thorlabs ITL200 adapters help needed - Page 2
Raynox DCR 150 tube lens (Pro) – Wemacro Rail
Raynox DCR 150 tube lens (Pro) Includes three mounts – WeMacro Deutsch
Case Construction Clamp Hose 514920
Mounting bracket Leuze BT 300M.5 - 50118543
4 x 3 Concentric Reducer Grooved Fitting 316 Stainless Steel