Milwaukee 48-22-9008 3/8″ Dr 56pc SAE/Metric Ratchet & Socket Mechanics Tool Set. FEATURES 90 tooth design with 4 degrees of arc swing for tight work spaces Parallel flats on sockets deter rolling; wrench compatible design Removable inner tray specifically designed for steel storage case ITEM DESCRIPTION Designed from the ground up, this 56-piece 3/8 in. drive ratchet and socket set offers better access in tight spaces and maximum tool strength. The 90-tooth ratchet tool offers 4° of arc swing and a slim profile design, so you can work in tighter spaces. The innovative, wrench-compatible socket design has 4 parallel flats to help prevent rolling. Optimized socket geometry additionally helps reduce bolt rounding and stripping. Find each socket size stamped into the flats for easy-to-read visibility. This kit includes a removable inner tray and is designed to be stored long-term in a steel storage chest. It also comes with a durable carrying case for ultimate portability. The set's accessories make sure the user can get every job done, both in the garage and on the jobsite. The ratchet and socket set is backed by a Mechanics Hand Tools Lifetime Guarantee. Individual/Set: Set Hand Tool Type: Ratchet & Socket Set Returnable: 30-Day Features: Adapter(s) included,Extension(s) included,Low Profile Tools Product Type: Hand Tool Number of Pieces: 56 Measurement Standard: Metric,SAE Drive Size: 3/8 in