The Oi Bell by Knog is a minimalist and high quality built bike bell. It´s meant to discretely blend on to the handlebar in a subtle way. Made from high end materials, you may choose your own style from copper, aluminum, brass or even a pricy but stylish titanium one. The sound it produces is very audible and may very well keep you safe and out of traffic trouble. It also comes in two different sizes to best fit your bike. An interesting add-on after market item that will surely come in handy for this fast paced market segment of urban bike commuters that love their rides and wish to upgrade them in style.