Universal design, fit for both left & right-hand side use.
GUEE b-Copper is a copper made bicycle thumb bell that will warn people of your whereabout. It is able to clip to brake/ gear cable / gloves and any other cockpit based accessories or conponents. Aluminum machined clamp with tool-free mounting system, also fit for both right and left-handed users. Ultra light (weighing only at 19g) but still very loud!