More from Amazon.com : http://www.amazon.com/gp/product/B00CRYVFZQ?tag=purrfectcatdi-20 <br /> <br />FOTGA Macro AF Auto Focus Extension Tube 10mm 16mm Set DG for Nikon 1 J1 J2 V1 <br /> <br />Diameter of the tubes Approx 615mm <br />Tube length 10mm16mm <br />Built in Metal Bayonet Plastic Body <br />Suitable forNikon 1 Mount Camera J1 J2 V1 <br />Package includingMetal automatic macro extension tube 10mm 16mm set x 1
