69 is received in a passageway 68 in body 52 opposite spherical element 66 one end of rod 69 resides immediately adjacent spherical element 66 in slot 64 of guide rod 61 fig7 an opposite outer end of rod 69 is located beyond the outer periphery of mandrel body 52 whereby when desired pressure may be applied against the outer free end of rod 69 to force spherical element 66 out of detent 63 and thus release guide element 60 to move forward to a position where the majority of guide body 60 extends beyond the die 54 of female mandrel 50 where it will enter an extended spout 30 to guide same during its collapse to a nested position female mandrel 50 is further provided with an air passageway 70 that communicates with an air supply or evacuation means 71 and the interior of a container 10 to permit pressure testing of the container as mentioned above second or male mandrel 80 includes a mandrel body 82 having a die portion 84 at an outer end of same with die portion 84 being the complement to the die portion 54 of female mandrel 50 in like fashion to female mandrel 50 male mandrel 80 may include heating means 85 disposed adjacent die 84 to provide heating of the container portion to be reformed male mandrel 80 is further provided with a passageway 86 extending axially with respect to the length of same extending into spout receiving recesses 87 and 87 39 a plunger 88 is received within axial passageway 86 and is movable into spout receiving recess 87 to contact an upper portion of a confined spout and force same into a controlled.