Abstract: Apparatus for holding and selectively releasing a plurality of wrench sockets of the type having a drive opening therein includes an elongated rack having a pair of slots open on outer faces thereof and in communication with an internal, longitudinally extending recess having a width greater than the width of the slots and a plurality of retainer assemblies mounted in spaced relation along the length of said recess. Each retainer assembly includes a support post projecting outwardly of one face of the rack through an adjacent slot therein for engagement within the opening of a wrench socket placed on the post. A releasable detent is provided on each post for detaining engagement with a wrench element placed on the post, and a release button, accessible through the slot on an opposite face of the rack is provided for manual, quick releasing of the detent to permit easy withdrawal of the wrench socket from the post.

Abstract: A frame extension system for adapting male and/or female bicycles to support a child seated within a child carrier seat in a position in front of the rider, behind the handle bars, in order to maximize child safety and to maintain the center of gravity between the front and rear wheels.