Movo Photo AF Macro Extension Tube Set for Nikon 1 AW1, J1, J2, J3, JF, S1, S2, V1, V2, V3 Mirrorless Cameras with 10mm, 16mm & 21mm Tubes (Metal Mount) Includes 10mm, 16mm & 21mm Automatic Extension Tubes Enables closer focusing (Marco capability) May be used individually or combined Maintains auto focusing Durable aluminum mount