Chainring bolts 4 and 5 bolt compatible (also for Singlespeed XTR). Aluminio Al7075-T6. High quality anodizing. Use our aluminum screws only for the intended area of use! The chain ring screws may not be used for the small chain ring. Sometimes there can be very little colour deviations between the several types of bolts. The reason are production tolerances and can not be avoided.