The K-Edge Double Road Chain Catcher is a must have addition to your bike, with a clever design it prevents the chain from dropping off the small chainring, helping to protect your frame and keep you in gear even at the most stressful times. Used by professional riders in events such as the Olympic games, World Championships, Tour de France, Giro d'Italia and Paris Roubaix the Chain Device fits onto a braze-on frame mount securely to provide insurance against front derailleur malfunctions, and with it adding a mere 10 grams to your set-up it is a must have addition to keep your ride looking and operating as it should! K-Edge Double Road Chain Catcher Features Used to good effect by top professional riders in the Olympic games, World Championships, Tour de France, Giro d'Italia, Paris Roubaix, and many more It acts a ramp to guide your chain and virtually eliminates the possibility of your chain dropping off the small chainring onto the bottom bracket, helping to protect your frame and keep you in gear Complete with all mounting hardware and longer bolts for Shimano, Campagnolo, and SRAM derailleurs, including a radius washer with a secure mounting interface for effective performance Fits onto braze-on frame mounts or a clamp-on front derailleur mount Designed to work with all double chainring bikes Made from 6061 T6 heat treated aluminium Long-lasting protective anodised finish Weight: 10 grams