Described herein is an assembly having a guide-wire having distally a flexible tip, and a guide-wire kit having comprising an introduction element of the guide-wire, a torque body, proximal to the introduction element, which includes blocking element of the guide-wire to the body, and a slide control which defines a support surface for the guide-wire, manually accessible to control (roto-)translations of the guide-wire, thereby orientations and/or sliding of the flexible tip, when the blocking element is in a release configuration. The torque body, the introduction element and the slide control are each disengageable, independently of the others, from the guide-wire in a radial direction.