This MILWAUKEE Combo Kit features a 90-tooth ratchet tool that provides 4 degrees of arc swing and a slim profile for work in tighter spaces. The included ratchet and socket set has FOUR FLAT Sides that prevent rolling and are wrench compatible. Sizes are stamped into each socket for easy-to-read visibility. Users can keep both the SAE & Metric 56-piece in. and 50-piece 1/4 in. Drive Ratchet and Socket Sets organized in the included PACKOUT Compact Low-Profile Organizer with a clear top for easy identification of parts at a glance. The Low-Profile Organizer is part of the Milwaukee PACKOUT Modular Storage System, allowing users to custom build storage systems to easily transport and organize their tools and accessories. This Milwaukee Combo Kit includes a 106 total 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 Low-Profile Organizer (48-22-8431).