copia del corona sram xx sl eagle t type thread mount 3mm offset 12vDesigned for use with our new XX SL power meter, these replacement rings are specially made for use with our new patented spider design. This chainring mounting system allows us to reduce weight without compromising reliability. Available in four different tooth counts, there is plenty of room to fine tune and customize your bike's feel. FEATURES Threaded mount design Range 32 38T Variants with 0 and +3 mm offset Compatible with T type chains SRAM