A set of sockets designed to be used with a 1/2-inch sq. drive ratchet or breaker bar, calibrated in millimeters somewhat than inches, gives a complete device assortment for numerous mechanical functions. The sort of set sometimes features a vary of socket sizes to accommodate completely different fastener heads, usually alongside extensions and different equipment.
The supply of a big selection of sizes makes such a toolset important for automotive restore, normal mechanical work, and different duties requiring the tightening or loosening of nuts and bolts. The metric calibration permits compatibility with a overwhelming majority of recent fasteners utilized in automobiles and equipment globally. Standardization of those instruments has tremendously simplified upkeep and restore throughout industries.
