【Model】Shimano Altus RD-M370-SGS; Rear Speeds: 9 /10/11/12 speed

• 【Design】Wide link design to improve the speed response ability and extend the service life.
• 【MATERIAL】Made of high quality steel materials, durable and long lasting.Easy to install and disassemble.
• 【EXCELLENT PERFORMANCE】Precise gears provide light and stable shifting performance and make driving easy and comfortable.
• 【APPLICATION】Suitable for MTB Mountain Bikes, Road Bikes, Variable Speed Bikes, Folding Bikes and City Bikes. It is your must-have bicycle accessory during your cycling trip.