Notice： 1. When the bike arrived, you need to install the front wheel, pedals, handlebar, seat and air up the tires. All of this will take about 10-20 minutes. 2. There is a Bike Assemble Instruction included in the package, please read it more carefully before installing the bike and tuning the brake and speed system. 3. If you can't assemble the bike by yourself, please take it to your local bike shop for assistance. But you need pay the assemble fee to them. 4. Pedal threads are different from left side and right side. L / R signs are marked on the spindle of the each pedal, make sure they are assembled on the right side .Thread both pedals into the crank arms as far as you can by hand. Then Fully Tighten them with the wrench. 5.All tools are included in the package, no extra tools. 6. 100% Quality guarantee: If you have any more questions or problems, contact us directly for assistance, we are willing to solve problem for you as soon as possible.