Tiagra BR-4700 Road Brake Calipers 49 mm drop. Enhanced brake arch proportions give a quicker linear response. Lightweight aluminum caliper design with tough anodized finish. Provides 30% increased braking power over the previous generation. Super SLR dual pivot designs keeps operating friction to a minimum. Item Specifications: Brake Lever Actuation: Short Pull Super SLR, Defined Color: Gray, Brake Mount Type: Short Reach Caliper (39mm - 49mm), Pad Type: One Piece, Brake Position: Rear,