The Knog bells, particularly the Oi Luxe Extender and Oi Classic models, combine modern design with reliable functionality. The names Oi Luxe Extender and Oi Classic were chosen to emphasize the special features of the models: Oi Luxe Extender stands for an extended fit and luxurious look, while Oi Classic embodies the classic, minimalist design. Many cyclists appreciate the bells from Knog Company, particularly the Oi Luxe Extender and Oi Classic models, due to their easy installation, durability, and clear sound quality.