STONE Anello Doppia Catena BCD110 4 Bracci per SHIMANO R7100 R8100 R9200 Anello Bici da Strada
BCD110RB2 fit for R7100 R8100 R9200. Compatible with BCD 110mm 4 arm chainring, fit for 105 R7100, Ultegra R8100 Dura ace R9200 cranks. Currently, the Double chainring products in production do not support small chainrign with small cog gears.