Meike MK-N-AF1-B Electronic Mount Auto Focus Macro Extension Tube Set Ring for Nikon D7100 D7000 D5200 D5100 D5000 D3100 D3000 D800 D600 D300s D300 D90 D80 ( Item#: D1688 )

Features:Support accurate Autofocus.Built-in electric pins.Combined with 3 tubes in different length: 12mm?∨ 20mm?∨ 36mm?∨ tubes may be combined for greater magnifications.Made of high-quality ABS that is more strong.Upgraded circuitry to work better with digital SLRs cameras and SLR lenses.Superior lock pin which can tighten the tube joint.Perfect for macro shooting.Specifications:Compatibility: for most Nikon lenses and Nikon DSLRS (such as Nikon D7100?∨ D5300?∨ D5200?∨ D3200?∨ D800?∨ D800E?∨ D5100?∨ D7000?∨ D3100?∨ D300S?∨ D5000?∨ D700?∨ D300?∨ etc.)Material: ABS?∨ PCColor: BlackMacro tube size: 6.9 * 7.7cm / 2.7 * 3.03in (D * H)Macro tube weight: 176g / 6.2ozPackage size: 10 * 7.5 * 7.5cm / 3.9 * 3.0 * 3.0inPackage weight: 230g / 8.1ozPackage List:1 * Macro Extension Tube Set1 * User Manual (English)"