The Thinline pad was designed for brake systems with tight brake clearance and for easy tire removal. This pad has a hardened rigid internal backbone that helps pack a lot of performance into a small space. Features: Low Profile Hardened and Plated reinforced steel backbone Patented Angled tip plow Water grooves Knurl-lock™ washer system Self tow in Available in Threaded and 2024 Aluminum Smooth Post Threaded Specifications: Weight per pair: 55.4 grams Overall length: 71.8 mm Pad contact width: 9.1mm Black - Koolstops' standard compound which is great for all weather conditions, but designed for dry condition riding. Salmon - Koolstops' most famous Salmon compound is also one of their most aggressive compounds for extreme all weather conditions especially in the wet, but still superb in the dry. Dual - A fusion of Koolstops' two finest compounds which will give superb braking in all weather conditions. This combination produces a more controlled smooth stop! Ceramic - This compound was designed for ceramic coated rims and is great in all weather conditions.