A tool for holding or driving an implant member having a recess is provided including an elongate tool shaft having a distal head portion for being received in the recess and a securing mechanism that keeps the head portion in the drive recess and which is disposed proximally up along the tool shaft from the distal head portion. In one form, the securing mechanism includes a plurality of resilient leg member having distal end locking portions. In another form, a drive system includes a drive tool and a driven member. The drive tool has a generally annular flange portion that is radially larger than the drive head portion. The driven member has a generally annular securing portion for receiving the flange portion in releasably locked engagement so that the circumferential extent of the locking engagement is maximized relative to the smaller radial size of the drive head portion.