Rear_Derailleur REAR DERAILLEUR, RD-4700, TIAGRA, GS 10-SPEED DIRECT ATTACHMENT, COMPATIBLE WITH LOW GEAR 28-34T FOR DOUBLE, 25-32T FOR TRIPLE

Min cog: 11T Max cog: SS: 28T GS: 34T Total capacity: SS:33T GS:39T Max front difference: SS:16T Compatible only with Tiagra 4700 or GRX RX400 shifters