A tool set for implanting bone screws in a human spine,followed by the implantation of a longitudinal connecting memberinto the bone screws includes a pair of independently mountableand manipulatable elongate guide tools that form a unitary toolguide when desired. Each guide tool includes attachmentstructure for independent operable connection of the guide toolto an arm of the bone screw. The bone screw/guide toolattachment includes an undercut and/or recess so as to resistseparation of the guide tool member from an attached bone screw.A removable stabilizer cooperating with the pair of guide toolsplaces such tools in a set spaced relation to one another whendesired. Further tools include a cooperating bone screw driverwith an attached stabilizer, a closure starter/reduction tool, aclosure driver and a counter torque tool.
