3 Quick-Release Ratchets1/4″, 3/8″ & 1/2″ Drive Sizes16 Combination WrenchesInch & Metric SizesCase IncludedReady for Work Make a hard day’s work easier with this Craftsman 450-piece mechanic’s tool set. From any project as complicated as spending the day under the hood to something as simple as tightening a bolt, you’ll have what you need for the job. This set comes in an array of sizes and measurements that will ensure that you always have what you need on hand.3 quick-release ratchets in 1/4″, 3/8″ and 1/2″ drives6 extension bars to extend your reach191 sockets, 6-point, 8-point and 12-point, in both inch and metric sizesAn array of 16 combination wrenches let you slip in where the ratchet won’t goA magnetic handle for easy nut or bit installationComes with 12 nut drivers175 screwdriver bits give you a nice variety40 hex keys6 adaptors are includedIncludes a 3-drawer case