Chain Protection Fin for the back wheel fork entirely made with solid material in ERGAL. It has 3 holes with a diameter of 5,5 m/m for the fastening . It is 80m/m high and 60m/m broad. In case of fall it avoids the contact with the chain and with the plate wheel….. We strongly suggest you to fasten it to the back wheel fork trough the 3 threaded holes M5….. N. 3 nuts M5x15 included….