This instrument is a particular kind of socket designed to drive fasteners with a six-sided (hexagonal) recess. The “12mm” designates the dimensions 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 mixture gives 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 right measurement socket is crucial for stopping harm to the fastener and the instrument. The prevalence of hex fasteners in automotive, equipment, and development functions makes this specific socket measurement a standard and important instrument for professionals and DIY fanatics. Its design permits for prime torque transmission, lowering the chance of stripping or rounding fasteners.