As you probably know by now we have 10s of thousands of lenses accumulated from Wollensak, Kodak, B&L, and old Edmund Scientific stock. This will be a"grab bag" of various lenses available in either small (2mm-30mm), medium (31mm-50mm), or large (51mm and up) lenses. These will be pre-packaged so we cannot sort out different lens types. You can expect to receive: achromats and single element lenses. Please indicate on your order form in the comments section if you want small medium or large. Price is per pound. An amazing deal!