Abstract: A hand tool includes handle, a connector mounted on the handle and having an inner wall provided with a mounting hole and a peripheral wall provided with a plurality of positioning holes, a drive member mounted on the connector and having a first end provided with a fixing portion which is detachably mounted in the mounting hole of the connector and has a peripheral wall provided with a fixing groove, a plurality of locking balls movably mounted in the positioning holes of the connector and movable into the fixing groove of the drive member to lock the drive member onto the connector, and a control sleeve movably mounted on the connector and movable to press or release the locking balls. Thus, the drive member can be detached from the connector to facilitate a user replace the drive member.

Abstract: A wrench includes a handle, and a driving unit pivotally mounted on the handle. The handle has an end portion provided with a support surface. The driving unit includes a first jaw having a first end pivotally mounted on the end portion of the handle, and a second jaw having a first end pivotally connected with a second end of the first jaw and a second end that is movable to abut the support surface of the handle and the first end of the first jaw. Thus, the second end of the second jaw abuts the support surface of the handle tightly and closely so that the force applied by a user is transmitted to the wrench directly so as to drive the wrench to operate the workpiece in an energy-saving manner.

Abstract: An open-ended ratchet wrench includes a handle provided with an open driving head, an open ratchet wheel mounted in the driving head of the handle and having an outer wall provided with a plurality of oneway ratchet teeth, and a pawl member movably mounted in the driving head of the handle and having a first side provided with a plurality of oneway locking teeth detachably meshing with the ratchet teeth of the ratchet wheel. Thus, the ratchet wheel has a side provided with an opening to make the ratchet wheel flexible so that the ratchet wheel is mounted on and detached from the workpiece easily and quickly, thereby facilitating a user operating the ratchet wrench to rotate the workpiece.

Abstract: A wrench includes a handle, and a driving unit pivotally mounted on the handle. The handle has an end portion provided with a support surface. The driving unit includes a first jaw having a first end pivotally mounted on the end portion of the handle, and a second jaw having a first end pivotally connected with a second end of the first jaw and a second end that is movable to abut the support surface of the handle and the first end of the first jaw. Thus, the second end of the second jaw abuts the support surface of the handle tightly and closely so that the force applied by a user is transmitted to the wrench directly so as to drive the wrench to operate the workpiece in an energy-saving manner.

Abstract: A hand tool includes handle, a connector mounted on the handle and having an inner wall provided with a mounting hole and a peripheral wall provided with a plurality of positioning holes, a drive member mounted on the connector and having a first end provided with a fixing portion which is detachably mounted in the mounting hole of the connector and has a peripheral wall provided with a fixing groove, a plurality of locking balls movably mounted in the positioning holes of the connector and movable into the fixing groove of the drive member to lock the drive member onto the connector, and a control sleeve movably mounted on the connector and movable to press or release the locking balls. Thus, the drive member can be detached from the connector to facilitate a user replace the drive member.

Abstract: A ratchet open end wrench includes a wrench body provided with an operation head, a ratchet unit mounted on the operation head, and at least one drive unit mounted on the wrench body and engaged with the ratchet unit. The ratchet unit includes a ratchet member provided with a plurality of oneway ratchet teeth. The drive unit includes a pawl member provided with a plurality of oneway driving teeth engaged with the oneway ratchet teeth. Thus, the ratchet member is driven by the pawl member to rotate a workpiece, so that the reaction force applied by the workpiece onto the operation head is shared by and distributed on the drive unit and the wrench body to prevent the force from being concentrated on the operation head.

Abstract: A xylophone includes two horizontally spaced and facing supporters each of which includes a top plate, a back plate, a bottom plate and two ends all of which define thereamong a receiving room, a plurality of parallel note-producing pipes respectively having two ends thereof received in the receiving rooms, and two connectors each of which detachably connects one of two ends of each supporter.

Abstract: A toy building block set suitable for assembling articles of play includes ring like block elements with a circular inner periphery and a polygonal outer periphery with straight side faces. A sixteen-sided polygonal block is provided with square dovetail connector and socket elements arranged on the side faces for connecting the block elements together. Other side faces of the block elements are provided with vertical dovetail chutes for co-operation with elongate stacking members having elongate dovetail projections. The block elements are thus able to be arranged in stacks on the stacking members for storage and transportation. Lashing points are provided on the stacking member ends for accepting a lashing means to secure the stack positively, and several stacks of block elements can be lashed together for packaging large sets of blocks. Different embodiments are presented. In one embodiment the block elements are provided with snap-fit socket elements.

Abstract: A toy building block set having several kinds of blocks, each of them including a circular member on the outer circumference of which a plurality of connecting elements and sockets are provided whereby the block sets are capable of being developed into a variety of articles through connecting selective blocks at selected relative positions, and assembling with an inflatable member to enable the finished work to float on the surface of the water.

Abstract: A toy building block set having several kinds of blocks, each of them including a frame having a rectilinear outline, the connecting elements and sockets are formed along the periphery of the frame. The block sets are capable of being developed into a variety of articles through connecting selective blocks at selected relative positions, and assembling with an inflatable member to enable the finished work to float on the surface of the water.