Swissstop offers the RacePro2011 pads to fit the new Campagnolo pad coupling system found on the 2011 Campagnolo Super Record, Record and Chorus brakes.  SwissStop GHP II model uses a special compound to improve the braking power in both dry and wet conditions. Swissstop GHP II Pads are ideal for aluminum rims. You'll be amazed at how these pads actually improve your ability to feather brake as well as stop on a dime. You receive four (4) pads with each order of SwissStop pads.  Designed to work with 2011 and eariler Campagnolo Skeleton brakes.  If you have 2011 Campagnolo calipers with the new pad holders and pad coupling system (2011 Super Record, Record, and Chorus), you must use the RacePro2011 version.