This is a used Stanley / Bostitch BMT72287 Pass-Thru Socket Set, these are similar to the GearWrench sockets of similar design. These allow you to use sockets on bolts that are threaded deeply on screws/rods where a standard or deep socket won’t work. This set unfortunately is missing the larger of the two ratchets, the smaller one is included and is approximately 3/4 in opening. The larger sockets are between 7/8″ – 15/16″ in size (measured 0.89 with a digital caliper). This toolkit is no longer manufactured so it’s harder to find the parts for it. I’ve read on some forums that the Hart manufactured ratchet works for the larger sockets. All components are used with scratches, scuffs, marks and wear from normal use and storage. Case is rugged, has both locking clasps and holds all contents securely. All sockets are 6-point. The larger socket handle is the only piece I see missing in the case. It has a large variety of SAE and Metric sockets, the metric sizes range from 6mm-27mm and the SAE sizes from 1/4″ to 1-1/16″. It also has adapters to convert and use traditional 1/4″, 3/8″ and 1/2 drive sockets and two extensions as well. Bostitch BMT72287 Pass-Thru Socket Set. Powered by SixBit’s eCommerce Solution.