| CPC E21B 7/06 (2013.01) | 20 Claims |

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1. A rotary steerable system, comprising:
a tool collar having a plurality of cavities and a plurality of through holes extending therethrough to interconnect the plurality of cavities, the tool collar having a downhole end and an uphole end;
a plurality of pad pushers each positionable within the plurality of cavities to be indirectly coupled to the tool collar using fasteners and some of the plurality of through holes, and a respective primary pad retention housing, each pad pusher to be coupled to the respective pad retention housing on the uphole end and the downhole end; and
a secondary retention mechanism to be slidably attached to the tool collar and coupled with the respective pad retention housing.
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