726 one or more frangible members such as shear screws 727 a pusher 728 a mandrel 729 a collet 730 a biasing member such as a spring 731 one or more retainers 732 and a spacer 733 the expander mandrel 729 may be tubular and disposed along an outer surface of the setting mandrel 703 so that the expander mandrel is longitudinally movable relative to the setting mandrel 703 the expander mandrel may include a shoulder formed at a bottom thereof the collet 730 may be disposed along an outer surface of the expander mandrel and include a base ring formed at a bottom thereof the spring may be disposed between the base ring and the expander mandrel shoulder thereby biasing the collet 730 longitudinally away from the expander mandrel shoulder the collet 730 may include a plurality of radially split cones 730 c each extending longitudinally from the base ring the cones 730 c may be radially split so that the cones may be radially movable between an expanded position shown and a retracted position an inner surface of the cones 730 c may be held in the expanded position by abutment with the spacer 733 an outer surface of the cones may abut the liner hanger 705 a top of the cones 730 c may abut a bottom of the pusher 728 the.