right side of the drawing a dual function nose swage 152 is threadedly attached to mandrel 111 at a thread 154 and locked in place by at least one set screw 156 received in groove 158 nose swage 152 acts to prevent shear ring 142 from falling off the end of mandrel 111 after shear screw s 146 are sheared and also acts as a pre reforming swage to open up tightly deformed junctions in the operational condition with shear screw s 146 intact the space between uphole end 160 of nose swage 152 and downhole end 162 of shear ring 142 is preferably sufficient to allow full shearing of shear screw s 146 by displacement of shear ring 142 in the downhole direction before the noted surfaces touch this prevents a partial shearing condition which may impede performance to some degree the partial shearing however should not completely prevent swage 110 from performing once swage 110 has been forced through the junction being reformed it will be withdrawn or pulled uphole in the event that the swage encounters significant resistance the features of the invention will be set in motion since both the swage ring support 114 and swage ring 116 are not connected to mandrel 111 resistance provided by the deformed junction is translated directly to shear screw s 146 at a predetermined amount of force screw s 146 will shear and allow mandrel 111 to move uphole at this point support 114 has not been moved relative to swage ring 116 thus.