The Milwaukee 48-22-9491 is a 242-piece mechanics tool set that combines high-quality hand tools with Milwaukee’s PACKOUT modular storage system. The set includes 1/4in, 3/8in, and 1/2in drive ratchets featuring a 90-tooth mechanism and a 4-degree arc swing for precise work in tight spaces. Sockets include Milwaukee’s FOUR FLAT design, which prevents rolling and supports wrench-assisted torque, with stamped and ink-filled size markings for easy identification. The kit contains both standard chrome sockets and SHOCKWAVE Impact Duty sockets for high-torque use. All components are organized in a PACKOUT 4-Drawer Tool Box with reinforced trays, high-contrast EVA foam, and a locking security bar for secure storage and transport.