for Nikon AI:
This adapter is designed for Nikon AI/NI SLR camera, allowing M48*0.75mm lenses to be mounted onto camera bodies for Nikon.
M48mmx0.75 adapter for Nikon AI/NI SLR camera to telescope eyepiece photography.
With this adapter, you can adapt your M48 mount lens for Nikon AI mount DSLR.
The adapter has no electrical connection and diaphragm & focusing are required to be set by manual.
Compatible for Nikon D40 D3000 D3100 D5000 D5100 D80 D90 D200 D300 D300S D7000 D3000 D60 etc.
for :
This adapter is designed for film or digital SLR & DSLR cameras, allowing M48 lenses to be mounted onto camera bodies for Canon.
Suitable for 1D(all), 5D(all), 6D, 7D, 10D, 20D, 20Da, 30D, 40D, 50D, 60D, 60Da, 70D, 100D, 300D, 350D, 400D, 450D, 500D, 550D, 600D, 650D, 700D, 1000D, 1100D, D30, D50, D60, , , XTi, XS, XSi, T1, T1i, T2, T3i, T3i, T4, T4i, T5, T5i, X6i, SL1.
Automatic diaphragm and auto-focusing will not work, only manual model will be available.

Specification:
Material: Aluminium
Color: Shown As Pictures
Lens Screw Mount: T M48*0.75mm
Optional M48*0.75 Adapter: for Nikon AI, for
Diameter: Approx. 60mm / 2.36inch
Weight: 33 - 45g

Package List:
1 * M48 Adapter