Kool Stop Dura 2 Brake Pads. Features: Lightweight forged alloy holder with dual pivot adjustment Compatible with most Shimano and SRAM road rim brake systems The included Dura 2 pads are thicker for longer life, 7.65mm contact for narrower rims, with cut outs to reduce weight and grooved for water displacement Dual: combination of Salmon and Black compounds for more controlled, smoother stopping Ultra lightweight at 30 grams a pair Specifications: Brake Type: Rim Brake Intended Brake Use: Road Caliper (Shimano/SRAM) Compound: Dual Configuration: Pad & Shoe Pad Attachment Style: Bolt-In & Cartridge Color: Black