Asahi Pentax 67 Extension Tube Set (two piece) lens mount_Contax/Yashica 8 constant aperture and effective

8 constant aperture and effective VR image stabilizer

The box claims that this is for the Spectra System and that it "can also be used with Polaroid Impulse Cameras

Original Leitz instructional manual for the M6

This is a good quality part with a matte silver finish and rubber bumpers to keep your camera scratch-free

Also included: battery

Asahi Pentax 67 Extension Tube Set (two piece) lens mount_Contax/Yashica 8 constant aperture and effectiveThis Asahi Pentax 67 Extension Tube Set includes two tubes (28mm and 56mm) with autodiaphragm functionality. Works with almost any Pentax 67 lens to provide substantial close focusing capability. In excellent working order, with minor cosmetic wear.