The Spurcycle is not your average bike bell. Created with the same attention to detail as the Faraday Porteur, this classic & beautiful accessory fits on the Porteur’s handlebar as if the two were made from one piece of steel. ??Made from premium quality brass and stainless steel with a raw finish. The bell is available in one size measuring 20mmx10.5mm and its petite size packs a lot of punch.