Professional Channellock Mechanic"s Tool Set includes all the tools mechanics need for the garage, on the job or at home. 3/8in. and 1/4in. drives provide a full range of socket sizes. Over 60 sockets in standard and deep drive allow for multiple uses. 72-tooth quick-release ratchets allow for use in tight quarters. Also includes metric and SAE combination wrenches, hex keys, magnetic bit driver with a full range of fastener bits, extensions and more.