FODSLR 10mm 16mm Macro Af Auto Lens Focus Metal Ring Mount Extension Dg Tube for Sony E-mout NEX Nex-6 A7r A3000 This macro extension tube set is suitable for Sony NEX E-mout. This tube enables a lens to focus closer than its normal set minimum focusing distance Built-in electric pins, so it supports automatic focusing, automatic exposure, TTL, etc. Combined with 2 tubes in different length: 10mm, 16mm. Perfect for macro shooting