This superb quality tool makes chain maintenance easy. Driving rivets out of your bike chain with the utmost efficiency and comfort, this Dragonfly model\'s unique design is reliable and reassuring to hold and use. Giving great grip from its T-Handle design, it can be used on 9, 10 and 11-speed chains thanks to its reversible construction. Specification Functions: Compatible with 9-12 speed chains, and Campagnolo 11 speed chains. Material: Handle : CNC machined 6061 aluminium / Body : CNC machined 6061 aluminium / Pin : Special steel S2. Size: 175 x 105 x 28mm. Weight: 285g.