An injection molding tool comprising two mold parts arranged for mutual movement along a tool axis between a closed position and an open position. The injection molding tool comprises a first mold core having a mounting end and a core end. Each of the two mold parts, in the closed position, form a mold cavity and a socket adapted for holding the mounting end between the two mold parts, and for releasing the mounting end in the open position. The core end of the first mold core in the closed position, extends along a core axis from the mounting end and into the mold cavity in a transverse direction with respect to the direction of the tool axis, so that the mold cavity forms a tubular space extending axially along the core axis between both of the two mold parts and the core end of the mold core part.