1. Material: aluminum alloy, ABS, carbon steel
2. Speed type: 21 speed
3. Application: bicycles, mountain bikes, etc.
4. Weight: refers to about 167 grams/piece, about 136 grams for the front and 236 grams for the rear
5. Size: refers to about 18x10 cm/piece, line length is about 162 cm, front dial is about 8.5x10 cm/piece, rear dial is about 14x8.5 cm/piece
6. Packing list: front dial x1, rear dial x1, left finger dial x1, right finger dial x1
Features:
1. The series design of brake and transmission makes it easy to brake and shift
2. The handle adopts a three-finger lengthened design, which can be accurately and compactly grasped by three fingers
3. Clear digital gear dial, with a clear digital gear dial in the middle, which makes shifting correct and more intuitive
4. Aluminum alloy rear derailleur transmission, light weight and high strength, middle and long leg guide plate design
5. ABS wear-resistant guide wheels, quiet and smooth, reduce chain wear
6. Carbon steel wear-resistant front derailleur, accurate and direct power transmission, sensitive and fast speed change
