A description of finitely generated left nilpotent braces of class at most two is presented in this paper. The description heavily depends on the fact that if $B$ is left nilpotent of class at most $2$, that is $B^3 = 0$, then $B$ is right nilpotent of class at most $3$, that is $B^{ (4)} = 0$. In addition, we construct a free object in the category of finitely generated left nilpotent braces of class at most $2$.
Categories: math.GR math.RA