The 2016 Knog Oi is a bell. No ordinary bell, the Oi, from an incredibly successful Kickstarter campaign, is a slender aluminum ring, fitting snugly around the handlebar. Its hollow body produces a delightful sound, announcing a rider's presence clearly. The bell is available in two sizes, one for 22.2 mm diameter bars, the other for bars up to 31.8 mm, the included shims fitting bars down to 23.8 mm. The bar clamp includes a cable manager, tidily corralling shift and brake cables.
A very good bike bell.