Hello, I was going to post in the Missing Link category, but I am not quite sure what I am missing. The Williams numbering system, to me, is baffling. All of these have a B date code. The 2 wrenches on the left look out of proportion to the 3rd wrench from the left. From what I could find, the missing wrench number seems to be a 1725B, 9/16 x 1/2. The wrenches in this photo are from left to right 1034A 1-1/8 x 15/16 > 1733 1" x 7/8, > 1029C 13/16 x 11/16, > 1729 3/4 x 5/8, next is the empty pocket, and a 1723 7/16 x 3/8 on the far right. The vinyl/plastic roll is marked K-10 ROLL ONLY. Thanks, Lou