Abstract: An apparatus for crimping couplings to hose ends having a crimping ring with a tapered camming surface and a plurality of circumferentially-disposed crimping dies having crimping surfaces for crimping the couplings and opposed camming surfaces for cooperation with the crimping ring camming surface, means for moving the crimping ring or dies relative to one another to provide the crimping action with the movable element being moved to the same stop position each time of operation irrespective of the extent of crimp desired, and means for adjusting the relative position between crimping ring and dies at the location where the movable element is at the said stop position so as to provide adjustment for the extent of crimp.