Sony VCL-DH1758 1.7TC. The real thing as made famous by Zackie Dawg and others using it with the Sony SEL 55-210 to produce beautiful 357mm images. Hard to find and usually very expensive. I do not have the box or little bag but the TC is in very good condition and works as intended. You get what is in the pictures, which is all you need to use the TC. I have 100% rating on Ebay with same user name.