A jacking tool capable of achieving up-down fine adjustment is provided, and belongs to the technical field of jacking tools. The jacking tool includes a fixed portion and a lifting portion; the fixed portion includes a base and a guide rod arranged on the base; the lifting portion is provided with a lifting plate, a climbing mechanism, and an adjustment grip for controlling the climbing mechanism; the adjustment grip is pressed to actuate the climbing mechanism, to control the lifting portion and the lifting plate to move up along the guide rod; the lifting portion is further provided with a locking mechanism clamped to the guide rod; the locking mechanism restricts the lifting portion from moving down; the lifting plate is slidably arranged on the lifting portion.

A clamped project bracket assembly is provided. The assembly includes a first and a second suspension clamp assembly. Each suspension clamp assembly includes at least one suspension clamp portion configured to couple to a clamp assembly configured to hold a clamped project and a pair of locating pins extending from the at least one suspension clamp portion. The assembly further includes a mounting bracket comprising a pair of pin retention grooves and a pair of pin positioning grooves formed at least partially therethrough. The pair of locating pins of the first suspension clamp assembly are configured to travel within the pair of pin retention grooves and the pair of locating pins of the second suspension clamp assembly are configured to travel within the pair of pin positioning grooves to position the clamp assembly at one of multiple discrete orientations.

A hand-held jack has a main body, including a frame on a grip, the frame having a shaft hole passing through a first chamber and a second chamber therein, a jacking member being fixed to a front end of the frame; and a slow-down device. The slow-down device includes a swing seat pushed by the first spring and mounted in the second chamber; at least one shaft clamp and at least one restricting plate urged by a third spring that are disposed in a first accommodating groove and a second accommodating groove of the swing seat for clamping a lift shaft; and an eccentric push member having an eccentric portion resting on the restricting plate and a push portion. When a workpiece is lifted by the hand-held jack, the slow-down device lowers the workpiece slowly.

A leveling system for a clamping device can include a base having a top, a bottom, and a plurality of sides; and a leveling knob positioned on one of the plurality of sides of the base and comprising a spring, a pin, and a knob connected at an outer end of the shaft. The spring can be compressible when the knob is pulled away from the base. In a locked configuration, the leveling knob can be at a neutral angle and in a home position with the pin positioned within the base. The pin can be removable from the base when the spring is compressed. The leveling knob can be twistable in at least one of clockwise and counterclockwise rotations when the pin is removed from the base.

A modular tray system can include a tray assembly and a ball head joint. The tray assembly can have a main tray and at least one liner tray nested in an interior of the main tray. The ball head joint can have a ball head and a stem, wherein the stem connects to the tray assembly. The modular tray system can include at least one magnet located between the main tray and the at least one liner tray. The at least one liner tray can have a plurality of compartments, wherein at least one magnet is located underneath each of the plurality of compartments. The at least one liner tray can be comprised of a first liner tray having a single compartment and a second liner have multiple compartments. A cover can secure onto the tray assembly to retain any pieces/liquids stored in the at least one liner tray.

A lifting and lowering tool includes a foot configured to be supported on a surface, a bar extending therefrom, and a movable assembly including a housing, a movable platform shaped to support a load that extends from the housing, a lifting actuator configured to incrementally move the movable assembly along the bar away from the foot, a lowering actuator configured to incrementally move the movable assembly along the bar towards the foot, and a release actuator configured to disengage the movable assembly from the bar to allow free movement of the movable assembly along the bar. In embodiments, the movable assembly engages the bar through locking plates that extend through a flange of the movable assembly. In embodiments the release actuator is spaced from the lifting actuator and the lowering actuator to prevent inadvertent actuation of the release actuator. In embodiments a flange of the movable assembly surrounds the bar.