These great value 57mm drop Shimano brake calipers are designed for frames with larger clearances, allowing enough room for full length mudguards and making them perfect for winter and training bikes. The Super SLR dual pivot design allows for superior braking performance with the aluminium lever arms running on coated pivot washers for a smooth, friction free response. Setup is easy thanks to toe in adjustable brake shoes and the resin QR thumb lever allows for fast wheel removal.