Features:
This lens mount adapter is mainly used for connecting the "M42 mount lens" to "cameras with Micro 4/3 Mount".
It is able to . 
Completely manual control, manual and manual exposure.
There is no electrical connection on the so diaphragm control of the lens is set manually.
Equipped with lock & stop pin.

Suit for
M42 mount lenses, such as , Pentax, Praktica, Mamiya, Zenit.
Micro 4/3 Mount DSLR camera.
Such as EP1, EP2 / DMC-G1, DMC-GH1, DMC-GF, etc..

Specifications:
Material: Metal
Compatible lens: for M42 Mount lens 
Compatible cameras: for Micro 4/3 Mount camera
Front mount: for M42 Mount
Rear mount: for Micro 4/3 Mount
Item size: 6.0 * 6.0 * 3.0cm / 2.4 * 2.4 * 1.2in
Item weight: 60g / 2.14oz
Package size: 7.0 * 7.0 * 3.5cm / 2.8 * 2.8 * 1.4in
Package weight: 67g / 2.37oz

Package List: D1454
1 * M42 Mount Lens to Micro 4/3 Mount Adapter