TheShimanoTiagraDual-Pivot Brake Caliperis sleek, balanced and consistent. TheTiagra4700 series provides serious entry-level riding performance with cascaded technology from DURA-ACE. ShimanoTiagraDual-Pivot Brake Caliper Features Good value Tiagra calliper brake Super SLR dual pivot design keeps operating friction to a minimum, improving braking performance Enhanced brake arch proportions give a quicker linear response and increased power 49 mm drop Lightweight aluminium calliper design with tough anodised finish Toe-in adjustable brake shoes for perfect pad alignment Durable quick release for fast and easy wheel removal