A modern take on the classic internal/enclosed cam design as invented by the late, great Tullio Campagnolo. - Internal cam design exerts a far greater vise-like grip vs. external/exposed cam QR lever designs for a more secure fit - Fits both road and mountain bike frames & forks with 100/130/135mm hub spacing - Construction: Chromoly steel skewer with alloy lever and plastic/steel body & acorn-nut - Sold as a front & rear matching pair - Lengths: 133mm (FR) / 169mm (RR) - Weight: 57g (FR) / 61g (RR)