angular edge portion 74 extending the length of ramp 40 and a shaped cavity or recess portion 76 cavity 76 has a force bearing insert contacting surface 78 extending inwardly from and substantially perpendicular to face portion 79 and extending at an angle inwardly from the top to the bottom thereof and is thus shaped to conform substantially to the diamond cross sectional shape of the recess portion 52 of lead end 54 of insert 16 contacted by hook 34 in addition the depth of cavity 76 is selected such that insert 16 is maintained within the cavity and in contact with the surface 78 during installation both features insuring that the insert axial motion described hereinabove is prevented enabling the minimum cross sectional area insert to be properly installed fig7 a and 7 b describe an alternative embodiment of the pawl face in accordance with the teachings of the present invention in particular pawl face 80 has a cavity 82 with an angular edge 84 extending along a portion of the surface of ramp 40 surface 84 in this embodiment is vertically shaped and as noted hereinabove extends a shorter distance than the corresponding surface shown in the fig6 embodiment however the depth of cavity 82 and the force receiving or insert contacting surface 86 function similarly to the embodiment shown in fig6 a and 6b the removal of the portion of the cavity portion closest to the pawl end reducing the.