Hutech Astronomical Products
Equipment for the Serious Amateur Astronomer
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Allows you to attach Leica or Nikkor EL lenses to eyepiece focusers such as 4317 and 7315.

A:   M39 P0.75 Female
B:   1.25" (31.7mm) sleeve

Part #7850
M39 to 31.7 AD
2018-01-03