Abstract: A tool assembly includes a front part and a second part. The first part includes a handle and a shank extending from an end of the handle. A polygonal recess is defined in an end of the shank. The rear part includes a rotation unit, a holding unit and a driving unit. The rotation unit is rotatably connected to the holding unit which includes an outer case and an inner case. The outer case includes receiving holes in an end thereof and the receiving holes communicate with storage spaces defined between the inner and outer cases. The driving unit extends through the inner case and the rotation unit. The front part is removably mounted to the shank that extends out from the rotation unit. The rotation unit includes a notch which is moved to be aligned with one of the receiving holes to pick tool out from the storage space.

Abstract: A tool box includes a cover mounted to a base which receives a receiving member, an extension rod, a collapsible member and a light means therein which is actuated by a switch member disposed to the box. The receiving member receives a plurality of bits and is pivotally disposed to the base member, a spring member is disposed between the base member and an underside of the receiving member to pop up the receiving member when the cover is opened. The extension rod can be inserted into a polygonal passage defined in an end of the box so as to connect with a bit. The collapsible member has a magnetic member disposed to a distal end thereof so as to magnetically adhere bits.