Protect your expensive carbon crankset and prolong it's life expectancy. When pedal and crank strikes take place, a large load is exerted on the tip of the crank and can damage the carbon layup and cause premature failure. The Race Face Next R crank boots provide a first line of defense for protecting your crankset. Features: Next R-style protective plastic crank arm caps, fits most carbon arms Specifications: Fits: Next R carbon cranks Package: Pair Color: Black