First things first: this is called a Honeywell Pentax bellows because Honeywell was distributing Asahi product in North America at the time, but it is a genuine Asahi product, not some weird knockoff. Anyway, this is a high quality macro bellows system for M42 thread mount cameras and lenses. Use it for macro work, or use the included slide copier to digitize your slides and negatives (with a compatible digital camera, adapter, and lens, which I feel I should mention are not included). In excellent condition, with only minor cosmetic wear. Includes double cable release and instructions.