As a newcomer to the popular Oi series, the Oi Prima is equipped with the new "WAVETEK" hammer technology. The redesigned hammer design ensures a more consistent tone and a slightly higher volume of 80 decibels. The Oi Prima fits most handlebars on the market. Simply slip it over the handlebar, tighten the hex screw briefly, and you’re ready to go. A practical cable management system is integrated into the mount. Lightweight, discreet, and space-saving.