The R Check Set is used to verify the proper setting of R Locks into profiles of corresponding sizes. It provides a means of confirmation by employing a pin mechanism that shears off if the fishneck of the R Lock is fully collapsed. By precisely locating the lock with the R Check Set and applying a gentle downward jar, the tool assesses whether the R Lock is correctly set. The pin on the checkset tool is designed to shear if the lock is properly collapsed. Upon retrieval, an unmarked or un-sheared pin would indicate that the R Lock is incorrectly set.
