Forged alloy holder with dual pivot adjustment Compatible with most Shimano and SRAM road rim brake systems Dura pads are the exact specification as Shimano pads, with Kool Stop's patented plow tip. Thinner than Dura 2 pads Extra pair of salmon pads are included Dual: combination of Salmon and Black compounds for more controlled, smoother stopping Salmon: aggressive compound for wet weather conditions Lightweight at 34 grams a pair