Abstract: An auxiliary handle of an L shape spanner comprises a handle, and at least one hollow. The handle has a hollow structure, and two sides thereof are spaced with at least one groove for being inserted by the cylinder. The center of the handle has a spanner through hole and an extension portion. The cylinder has at least one spanner fixing holes for being inserted by the L shape spanner and being fixed therein and thus, the cylinder is embedded into the groove of the handle. A short rod of a selected L shape spanner is be inserted into the cylinder of the spanner retaining hole so that a long rod protrudes from the spanner through hole so as to be formed with an L shape spanner with a T shape auxiliary handle; only one handle can match with L shape spanner of different size. The auxiliary handle can be varied easily by assembly and can be operated easily.

Abstract: A universal cavity pit wrench having a sleeve with an open end, a mounting panel secured within the sleeve, a plurality of pillar posts that are longitudinally compressible against the mounting panel, and the pillar posts extending out of the open end of the sleeve. The pillar posts are densely packed next to each other and can fill the void of a nut, upon which the sleeve can be rotated to either loosen or tighten the nut.

Abstract: An adjunct device for a speed spanner. The adjunct device is an auxiliary device to facilitate coupling of an L-shape hexagonal spanner to the adaptor of a prime speed spanner. The adjunct device is one-piece in structure, topped by a hollow-set sleeving which protrudes eccentrically downwards to form an assembly mounting. The mounting is flanked by a graded hole which includes a chain of individually sized conterminous hexagonal holes to accommodate engagement by any of a number of differently sized hexagonal spanners, and in such case, the axis on the other side of such any hexagonal spanner will be just aligned to the axis of the sleeving, so that once the sleeving is engaged with the coupling adaptor on the part of the prime speed spanner, the L-shape hexagonal spanner may be readily rotated by manual operation with respect to the prime speed spanner.

Abstract: Structural Design of Universal Cavity Pit Wrench, comprising: a sleeving, a mounting panel, a plurality of pillar posts, retainer rods and a plurality of correspondingly functioning retraction springs, for assembling, the plurality of retainer rods are applied to penetrate the mounting panel, get coupled to the retraction spring, then engaged with pillar posts so that the pillar posts are invested with the capability for free retractions, to follow that, the mounting panel is planted into the inner wall of the hollow-set sleeving so that the plurality of pillar posts are neatly deployed on top of the sleeving, so that any nut to be set into the cavity pit, of any type or configuration, may be brought into the cavity pit by the action of those neatly deployed pillar posts, and once all the pillar posts are planted in full into the nut bearing cavity pit loosening or tightening up of an object nut may be proceeded with ease and convenience.

Abstract: A cutter wheel type can opener includes a first handlebar and a second handlebar pivoted together, a lever pivoted to the first handlebar, a gear mounted on the first handlebar at one end, a cutter wheel mounted on the second handlebar at one end and rotated by the gear, a ratchet wheel mounted on the lever, and a stop plate mounted on the lever and retained in engagement with the ratchet wheel by spring means to limit the direction of rotation of the ratchet wheel, wherein continuously turning the lever up and down relative to the handlebars causes the cutter wheel to be continuously rotated in one direction in opening the lid of a can.

Abstract: The T-handle hexagonal key wrench set and base can be disassembled and piled up before use, thus decreasing the volume thereof. This feature is especially suited for mass transportation and saves transportation costs. Also, each bearing plate is securely interlockable by use of interconnecting insertion plates. These interlocking insertion plates allow quick, secure assembly into a functional " " shape.

Abstract: An improved structure of the bearing base for a foldable hex-key wrench set. The both ends of the bearing base are mounted with several hex-key wrenches respectively. The bearing base comprises two bearing plates formed into L-shaped members. The two bearing plates may be set, with bolts, at different widths by means of bolts having different lengths so as to mount on the bolts a different number of wrenches; therefore, one bearing base can accomodate different wrench set having different number of hex-key wrenches.