The new Road Racer MK3 incorporates a unique, superfast fixing system and has been widended to accomodate tyres up to 35c. Weighing in at only 260 grams the pair, they fit to most 700c bikes including both disc and caliper brakes. Features: Roadracer MK3 fits almost any brand of road bike with tyres up to 700x35c. Super Strong Duotec Interlock fixing system for trouble free attachment to your bike.. no tools needed!. Suits all brake systems - discs and cantis. Does not require mudguard eyelets to be present on your frame. Perfect for all road, gravel and trekking bikes.