Milwaukee's Ratchet and Socket Set features sockets that have FOUR FLAT™ Sides that deter rolling and are wrench compatible for maximum productivity. The 90-tooth ratchet tool that provides 4° of arc swing and a slim profile for work in tighter spaces. The sizes are stamped into each socket for easy-to-read visibility. You can keep both the SAE & Metric 56-piece 3/8" and 50-piece 1/4" Drive Ratchet and Socket Sets organized in the included PACKOUT™ Compact Low-Profile Organizer equipped with a clear top for easy identification of parts at a glance. This PACKOUT™ Organizer is IP65 rated and built from impact-resistant materials for durability on and off the jobsite with a reinforced hinge and heavy-duty latches. The Compact Low-Profile Organizer is part of the MILWAUKEE® PACKOUT™ Modular Storage System, allowing you to custom build storage systems to easily transport and organize your tools and accessories. This Combo Kit includes a total of 106 pieces: a 56 Piece 3/8 in. Drive Ratchet and Socket Set (48-22-9008), a 50 Piece 1/4 in. Drive Ratchet and Socket Set (48-22-9004), and a PACKOUT™ Compact Low-Profile Organizer (48-22-8436).