The invention concerns a piercing member protection device, a kit of a piercing member protection device, a first and second fluid container and a method a method for transferring a fluid between a first and a second container using a piercing member protection device. The piercing member protection device comprises a protection chamber to protect at least the tip of a piercing member. The piercing member protection device further comprises a first and a second member arranged to each other The first member is further arranged to slide with respect to the second member between a secured position, in which at least the tip of the piercing member is enclosed within the protection chamber so as to prevent the tip of the piercing member from exposure and an unsecured position, in which the tip of the piercing member is arranged outside the protection chamber wherein the first member is arranged to turn with respect to the second member between a locked position and an unlocked position so that when the first member is in the locked position the first member is substantially unable to slide along the longitudinal axis A and when the first member is in the unlocked position the first member is enabled to slide along the longitudinal axis A.
