Features:100% new and high quality!Aluminum Alloy ring body, refined copper bayonet (not wear lenses).The inner wall spray extinction processing to avoid the reflection of the impact on the CMOS imaging.CNC machine tool for non slip lines, feel good.Manual focus, can be with the body to achieve manual exposure, infinite perfect combination of coke!Workmanship is very fine, with a bayonet tightly and smooth, like the lens.Specifications:Material: aluminum alloyColor:blackSize:6.5*3cmPackage size:7*7*3.5cmFit for: Sony NEX-3, NEX-3C, NEX-3N, NEX-5, NEX-5C, NEX-5R, NEX-5T, NEX6, NEX7, NEX-F3, a600, a500, a3500, a3000for Canon FD mount lensPackage included:1 x Lens Adapter RingNotes:They do not support auto-focusing,and you need adjust focusing by hand. Thank you!