Shimano Tourney TY500 Long Cage 6 7 Speed Rear Derailleur Category_Jersey Short Sleeve MODEL NO RD R3000 GS SERIES SORA Brand_Birzman MODEL NO RD R3000 GS SERIES SORA R3000 Series Color Series color Compatible chain HG 9 speed Total capacity 43T Cable adjuster ✔ Mount_Direct attachment (Conventional) ✔ Fluoric coated link bushings 2 Low sprocket_Max A ramp is available as a separate accessory to help you install heavy bikes onto the carrier front difference 20T Pulley_Teeth 13 13T Pulley cage SGS Mount_Riveted adapter (BMX Track type) ✔ Mount_Riveted adapter (Road type) ✔ Top Normal spring type_Double servo ✔ Top sprocket_Max SHIMANO TOURNEY TY Rear Derailleur Long Cage 6 7 speed