AI-OM chip adapter ring

1)This AF-confirmation adapter allows you to useContax C/Ymount lens onOlympus OMcamera with AF confirmation in indication.With this adapter,your beautifulContax C/Ylenses(Carl Zeiss Jena,Penta con,Pentax,etc.) can be used on digital or filmOlympus OM camera.With the incorporated AF Confirmation chipset, you do not need to guess the correct focus by naked eye, as it will be indicated by the accurate auto focus system ofOlympus OMcamera with a beep sound (just like using EF lens in manual focus mode). Precisely made of Brass. Allows focus to infinity.With AF Confirmation indication 2)Material:Aluminum 3)Color: black 4)1pcs/high qualified box 5)Packing:100pcs/ctn 6)We have the items for following conditions: Lens interface→ Camera interface M42-OM adapter ring(silver,made of aluminium and copper) M42-OM adapter ring(black,made of aluminium) OM-OM adapter ring(black,made of aluminium and copper) Nikon AL-OM adapter ring(black,made of aluminium and copper) Pentax PK-OMadapter ring(silver,made of copper and aluminium) Leica R-OM adapter ring(silver,made of copper and aluminium) Exakta-OM adapter ring(silver,made of copper and aluminium) C/Y-OM adapter ring(silver,made of copper and aluminium)