Kool Stop pads. The pad material is formulated for use with carbon fiber rims. Includes 2 pair of pads (4 pads total). Note that the packaging includes scotch tape on the blister pack, but the product is brand new.

From Kool Stop website:

Our C89 Series insert pad was designed to fit in Campagnolo® 8 and 9 speed group systems. Also fits Shimano Dura Ace BR-7400 and BR-7403.