※ KNOG × EF Limited Collaboration Model This is the KNOG Oi bell. Brand new, unopened. (Excerpt from the manufacturer's HP) An innovative bicycle bell that pursues not only design but also practicality as a bell. Unprecedented Excellent design and distinctive sound. The innovative KNOG Oi bicycle bell, developed by raising funds on the crowdfunding platform KICKSTARTER. KNOG's designers and engineers processed aluminum material with a CNC machine. Through repeated trials of thickness, width, material, and curves, they pursued the best bell, revolutionizing the shape of bells. Not only the design but also the practicality as a bell is pursued. It is designed with the best sound quality and volume in mind. Color: Pink Compatible diameter: (Large) 31.8 / 26.0 / 25.4 / 23.8mm (using shims) Mounting width: 15mm Weight: 25g #BicycleBell #KNOG #Knog #RoadBike ※ Please note that we cannot offer a discount on this product.