Asahi M42 Auto Extension Tube Set brand_Kenko If you're looking for a

If you're looking for a little pocket camera that shoots decent pictures and runs off a pair of common AA batteries

No diaphragm

We recommend treating it as weather resistant rather than submersible

with an effective image stabilizer and a bit more range than the typical 18-55mm kit lens

Asahi M42 Auto Extension Tube Set brand_Kenko If you're looking for aThis Asahi extension tube set includes three M42 thread mount extension tubes: roughly 9mm, 19mm, and 29mm, for a total of about 57mm extension when combined. These are auto diaphragm tubes with a stop down passthrough system. In excellent condition, with only very minor paint wear. Includes original leather case.