Neewer ABS AF Auto-focus Macro Extension Tube Set 10mm&16mm for Sony NEX E-mount Camera NEX 3/3N/5/5N/5R/A6000/A6300 and Full Frame A7 A7S/A7SII A7R/A7RII A7II Compatible with Sony NEX, E-mount series Micro DSLR Support Exact TTL Exposure and Auto-focus;Built-in Electronic Pins and internal driver; New adapter aperture hole design, perfectly support Sony full-frame camera A7/A7R/A7S; Including two tubes(1mm, 16mm), 3 different combinations; Made of High-quality Nylon, Lead and ABS, powerful and stable