Abstract: A wellhead slip formed from a plurality of slip segments adapted to be arranged in a closed circular fashion around a tubular member so as to form a plurality of vertical gaps all but one of which are defined as "hinge" gaps, the remaining gap being defined as an "opening" gap, the slip segments being provided with aligned circumferential grooves constituting, in effect, a peripheral groove for the complete slip. A hinge yoke is received in the circumferential grooves in the area of each hinge gap and spanning the hinge gap, each hinge yoke being provided with a notch adjacent each of its opposite ends and facing outwardly from the groove. A hinge pin passes through holes above and below the groove in the area of each notch whereby the notches are received behind the hinge pins and whereby all of the slip segments can be moved hingedly outwardly from the closed circular position by opening at the opening gap.