Set of double control cylinders for a lock, each cylinder for a lock comprising: - a statoric body longitudinally having a cylindrical cavity which extends along an axis (L) from a first longitudinal end to a second longitudinal end of the statoric body ; - an operating cam of the lock rotatable about said axis (L); - a cylindrical bush positioned coaxially in said cylindrical cavity and rotatable on itself integrally with said cam ; - at least a first electromechanical control device for said cam associated with a first handle , said first control device comprising: a shaft configured to be longitudinally engageable by said first end in said cylindrical cavity for a stretch that does not exceed the medium plane (S) of the cam orthogonal to said axis (L); a connection element for connecting said first handle to said cam , engageable in at least a first housing provided in said bush on the side of said medium plane (S) facing said first end ; and translational operating means for translating said connection element along said shaft for its engagement in at least said first housing ; said bush has having a second engagement housing that extends from the side of said medium plane (S) facing said second end of said cylindrical cavity of said statoric body , said second engagement housing having a distance from said second end equal to the distance of said first engagement housing from said first end , said first and second engagement housing having the same shape coupling with that of said connection element ; characterised in that all said cylinders have a statoric body of different length and a bush of different length adapted to provide, for all said cylinders, a same distance between said second engagement housing and said second end equal to the same distance between said first engagement housing and said first end . - a statoric body longitudinally having a cylindrical cavity which extends along an axis (L) from a first longitudinal end to a second longitudinal end of the statoric body ; - an operating cam of the lock rotatable about said axis (L); - a cylindrical bush positioned coaxially in said cylindrical cavity and rotatable on itself integrally with said cam ; - at least a first electromechanical control device for said cam associated with a first handle , said first control device comprising: a shaft configured to be longitudinally engageable by said first end in said cylindrical cavity for a stretch that does not exceed the medium plane (S) of the cam orthogonal to said axis (L); a connection element for connecting said first handle to said cam , engageable in at least a first housing provided in said bush on the side of said medium plane (S) facing said first end ; and translational operating means for translating said connection element along said shaft for its engagement in at least said first housing ; said bush has having a second engagement housing that extends from the side of said medium plane (S) facing said second end of said cylindrical cavity of said statoric body , said second engagement housing having a distance from said second end equal to the distance of said first engagement housing from said first end , said first and second engagement housing having the same shape coupling with that of said connection element ; <EOS>