The SB-LD is a hybrid tool bag that has a dedicated tool section and a dedicated tester section. The tool section is an open compartment that allows for quick access to your hand tools. The tester section is an enclosed storage bay designed to protect test equipment from the environment and other tools. The tester section also has our V-SWAP™ Technology (comes with the V-SWAP Rear Meter Panel) that provides the option to store meters, smart probes, or hand tools by simply swapping-out the panel with other panels (sold separately). This tool bag is great for tradespeople wanting the benefit of open top storage for hand tools while protecting sensitive test equipment when not in use.