pwm with a shield motor

Hello, I don't know if there are motor shields which can do pwm with 50 V.
Is it possible ?

Sure. Sometimes I think there are more motor drivers than motors.
What kind of motor ? What current ?

I would like to use 2 DC motors.
current : 2 ampere for one motor

What is the stall current of those motors ? That is the maximum current when the axis is blocked (or moving very slow) with maximum voltage. Can you give a link to those motors (just copy the url in the text).

This is one that can do it, but the 50V is the abosolute maximum. What is the normal voltage you will be using ? and what is the peak voltage ?