This device is a particular sort of socket designed to drive fasteners with a six-sided (hexagonal) recess. The “12mm” designates the scale of the hex opening, becoming onto matching 12mm hex head fasteners. The “3/8 drive” refers back to the measurement of the sq. recess on the again of the socket, which mates with a 3/8-inch sq. drive ratchet or extension bar. This mix offers a safe and environment friendly technique for making use of torque to fasteners.
The standardization of drive sizes and hex sizes ensures compatibility throughout a variety of instruments and fasteners. Utilizing the proper measurement socket is crucial for stopping injury to the fastener and the device. The prevalence of hex fasteners in automotive, equipment, and development functions makes this explicit socket measurement a typical and important device for professionals and DIY lovers. Its design permits for prime torque transmission, lowering the chance of stripping or rounding fasteners.