We can tell you lots of things about the Campagnolo Record 11-Speed Cable Kit. They have stainless steel inner wires and friction-resistant housings lubed with special grease. They've even produced some numbers demonstrating how low the friction is. To quote, "Campagnolo cables maintain a constant friction value of 20-22 N at the most critical point, i.e. when the cable is actuated. A truly incredible value when one considers that some systems produced by other manufacturers exhibit values in the range of 130-140 N." Is "N" another way of saying Newton/meters? We're not sure. But it's intriguing and appealing.
But all of that tech stuff pales in comparison to this one nugget. You need this 11-speed cable kit because of the unique 4.1mm outside diameter to the shift cable housing. And the housing fits directly into the lever body, so matching this size is essential. Likewise, so is matching the Campagnolo shift cable diameter and cable end shape. Put the wrong cable in the shifter, choose the wrong shape, and you'll be drilling to get that cable end out when it comes time to replace the shift cables. Use 11 speed cables and housing with 11 speed levers. Use 10 speed cables and housing with 10 speed levers. Do not go vice-versa!
The Campagnolo Record 11 Cable Kit comes with two brake cables, two shift cables, ferrules, and enough brake and shift housing to cable one bike. This housing works with all Campagnolo 11-speed shifting components. The kit comes in black, red, or white.