Campagnolo Super Record Skeleton Dual-Pivot Rim Brake Caliper Set, Front & Rear. MPN: BR11/SR generation (center-mount). Weight: 277g pair (bare). Material: Forged aluminum arms, titanium hardware. Compatible: Campagnolo 11-speed groupsets, road bikes with 700c wheels, fits tires up to 28mm on C17/C19 rims. Differential geometry: greater front power, progressive rear. Ball-bearing pivots, titanium screws, quick-release pad system.