Organized and Compact. The OC Cases are an ideal add-on for our larger tool bags or as a stand-alone storage solution. Designed for versatility each case provides a semi-rigid protective shell for specialized tools & electronics. With a number of available V-SWAP panels each case can be outfitted with up to 3 different organizational components. The medium-sized OC140 includes 2 V-SWAP panels (a panel with elastic tension straps (Tension Strap Panel) and a removable Zippered Parts Folio bag) and an exclusive double-gated carabiner that can connect in multiple locations. Additional panels and a Repositionable Belt Clip (to attach case to a belt or tool bag) are sold separately. For any project choose to include no panels 1 panel or any two panels. There are 35 possible configurations for the OC140.