Note:
SD1-SD4 are for Shimano, SD5 and SD6 are for SRAM.

SD1(17T+17T) is suitable for Shimano 4600/4700/5700/5800

SD2(17T+17T) is suitable for Shimano 6700/6770/6800//6870/9000/9070

SD3(13T+17T) for Shimano R7000

SD4(13T+17T) is suitable for Shimano 8000/8050/8070/9170/9150/9100

SD5(17T+17T) is suitable for SRAM RED10S/ RED11S/ RIVAL10S/ RIVAL11S/ FORCE10S/ FORCE11S

SD6(17T+17T) for SRAM eTap
Package including: 1pcs bike Guide wheel