Features:
Adapter for M42 Lens to SONY NEX E-mount camera.
It allows focus to infinity.
Install, remove and operate lens smoothly.
Super smooth surface finishing and made of metal,sturdy enough.

Specifications: 
Material: Metal
Suitable: for M42 Lens to Sony NEX mount camera
Color: Black
Item size: Approx. 5.8 * 3.2cm / 2.3 * 1.3in
Item weight: Approx. 66g / 2.3oz
Package size: Approx.6.8 * 6.8 * 3.5cm / 2.7 * 2.7 * 1.4in
Package weight: Approx. 72g / 2.5oz

Package List: D1322 
1 * M42 adapter ring

Note：
Although the lens will fit physically,automatic diaphragm,auto-focusing, or any other function will not operate correctly while using this adapter.