This is a ratcheting box wrench, Wright Tool 9423, in 12-point, 19mm. Wright hot-forges its tools from alloy steel at its own Ohio plant rather than buying forgings in, and the working faces are cut to bear on the flats of the fastener rather than the corners.
The ratcheting box end keeps the wrench on the fastener in a space too tight to reset a standard wrench. This one is metric.
Wright Tool has hot-forged hand tools in Barberton, Ohio since 1927, and publishes a per-SKU disclosure for the small share of its line that is not US-made.








