in the art will appreciate that the slips 18 and 22 can be formed as an integral part of the mandrel thus eliminating the threads 12 and 14 as well as the rings 16 and 20 in that event the slips 18 and 22 can be a series of finger shaped protrusions from the outer surface of the mandrel 10 these protrusions can be integral welded or attached in some other way although a packer has been described the sealing element 24 can be eliminated and the slips 18 and 22 regardless of how they are attached can be used to anchor a tubing string not shown or a tool not shown attached to the mandrel 10 when the wickers 32 dig into the surrounding casing c conceivably the expansion of the wickers 32 into the casing or outer tubular c can accomplish not only a support function but also a sealing function sealing is possible without having to appreciably expand the casing c or even without expanding the casing c at all the invention can be effective with a single or multiple rings of slips regardless of their attachment mode and with a variety of known designs for the sealing element 24 the clear advantage of the present invention is that cones are not required to drive the slips outwardly this means that for a given outside diameter for run in the packer or anchor p of fig1 will have a larger internal bore diameter than a design relying on cones to ramp slips out the larger bore possible in.