Nitto mountain handlebars are posted here.

Nitto B125 AA NJS Racing Bar Craft Duralumin 25.4mm x 40cm. New, $120.00/each

N.J.S. (Nihon Jitensha Shinkokai-the Japanese Bicycling Association) is the governing body of Keirin racing. It has very strict standards, with the intention of preventing mechanical failure and "leveling the playing field" among the athletes.

Front view

Close-up of the center section

The "NJS" approval stamp.

More info stamped on the bar.