AF-I Teleconverter TC-20E 2x This is a 2x teleconverter made by Nikon. Originally designed for AF-S and AF-I lenses, it has been modified to work with lenses other than those specifically designed for it (e.g., Ai, older AF lenses). * Because the front element protrudes, it can only be attached to telephoto lenses with a recessed rear element. * Older AF lenses without a built-in AF motor will be manual focus (MF). The exterior is in fairly good condition. The optics have some dust and debris, but no mold. Included accessories: Front and rear caps Instant purchase OK, no price negotiations.