REVOLEX34 (Revolex 34) is a tool that turns the bolt of the chain tensioner with 3mm and 4mm hexagon wrenches, which replaces the standard L-shaped hex wrench with an I-shaped wrench. The 3mm size is for the bolt mounted on the carbon frame, and the 4mm size is for turning the bolt of the chain tensioner attached afterward, but please check in advance as the size may differ depending on the manufacturer.
The features of REVOLEX34 are that you can work efficiently in a narrow space near the chainstay, that you are freed from worrying about the L-shaped wrench not rubbing against the stay, and that you can work with one hand. Both ends are processed with anti-slip knurls to assist work, and a rubber O-ring is attached to prevent the round wrench from rolling. On the 3mm wrench side, a thin groove is dug as a mark for judging the size. Overall, the design is reminiscent of a drafting pencil with a sharp atmosphere, and the engraving by laser marking is inspired by the clock face and uses Roman numerals.