All tools in this industrial quality tool set meet astringent new ANSI/ASME specifications. The 72-tooth ratchets require only a 5-degree swing. A large quick push-button release must be engaged to remove sockets. The ergonomic-designed 3/8" quick-release ratcheting drive can be used for lengthy periods with less fatigue. This set includes a wide selection of standard and deep sockets in the most common SAE and metric sizes.