These are the Shimano genuine replacement pads that are standard for the new 7900 brake calipers. Shimano claims a 30% increase in power in the dry and a 20% increase in the wet.
A very good brake pad for all conditions even if you do not have Dura Ace 7900 calipers. These will actually fit 105/Ultegra/EE Cycle Works pads holders.
Sold in pairs - You need 2 pairs to fit out your bike.