The Carbon-Ti X-Fix BCD 107 2x Chainring Bolt Kit is designed to be compatible with BCD 107 2x crank chainring interfaces. They are ideal for the Carboring BCD 107 X-AXS double chainring. This kit comes with five male and five female bolts so you can easily upgrade your build. The pieces are lightweight, minimalist, and affordable. This kit gives you a unique look and extra weight savings.