EUROBIKE Road Bike,21 Speed Bicycle with Disc Brake,700C Wheels Road Bikes for Men or Women,49cm/54cm Frame for Adult…

Brake System】Provides a stronger, faster, more reliable stopping power than the traditional V-Brake Systems; Disc brakes also do not wear out your tires and last much longer; Since disc brakes are much more consistent you’ll be able to judge braking more accurately.Front and rear daul disc brakes make brakes more sensitive
【700C Tires】It takes less energy to keep the bike at speed. 700c wheels have less rolling resistance, making them more efficient, you can ride further using the same amount of energy.
【Shimano Gears】Shimano 21-speed shifter combo with brake lever provides quick gear changes.Shimano 21-speed shifter combo with brake lever provides quick gear changes..21 speed makes the speed change more smoothly