Abstract: The present invention relates to a key holder for a set of graduated keys such as hexagonal (hex) or Allen keys. The key holder includes two or more segments each having at least one opening for receiving a key. The holder further includes a hinge that is configured to permit the movement of adjacent segments between and aligned position and an unaligned position. In the aligned position, the removal of the smaller of two graduated keys is blocked when said keys are in the openings of adjacent segments and are positioned in the same direction. In the unaligned position, graduated keys in adjacent segments are perpendicular to one another and the smaller key can be removed without interference from the larger key.

Abstract: A torque wrench for applying torque to fasteners, said torque wrench comprising a fastener drive structure having a head constructed and arranged to be removably engaged with a fastener and tang structure extending rearwardly from said head.