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

MK-N-AF1-B Macro Extension Tube Set Supports accurate Autofocus. Combined with 3 tubes in different length: 12mm, 20mm, 36mm, tubes may be combined for greater magnifications.
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, PC
Color: Black
Macro tube size: 6.9 * 7.7cm / 2.7 * 3.03in (D * H)
Macro tube weight: 176g / 6.2oz
Package size: 10 * 7.5 * 7.5cm / 3.9 * 3.0 * 3.0in
Package weight: 230g / 8.1oz

Package List:
1 * Macro Extension Tube Set
1 * User Manual (English)