Here's what you need to take 35mm photos thru your microscope. Quality aluminum construction. Fits standard 25mm microscope tube tube (including our T1480 Student Microscope). Unit has 2 sections with bayonet thread to easily come apart so you can insert your eyepiece. Other end has standard "T" thread to fit your camera's T-Adapter (available at most camera stores if you don't already have one for your camera). Unused.