Does this come as a pair ?come with the tool to tighten the pedal to the crank？

Yes！They come as a pair and the installation tools are included.

Are these pedals universal？

Yes, it is suitable for any bicycle that uses a standard 9/16 inch spindle, especially for mountain bikes, BMX, and hybrid bicycles.

Does the bearing of this pedal rotate smoothly?

Yes！Bucklos sealed 3 bearing pedal rotates very freely，waterproof and dustproof design makes the pedal more durable and noiseless.