In the Sonic Foam System, the tools are laying in well-organized, chemical resistant, foam inlays with accurate shapes. They are quickly accessible for fast workability, ergonomically laid out, and feature a two-tone color system for a convenient survey of missing tools. Sonic sockets and ratchets are made from Chrome Vanadium steel for a lifetime of durability, strength, and corrosion to resistance. (302301, 302301-CE)