Abstract: A tool includes a shank. A driving device is mounted on the first end of the shank and has a first ratcheting mechanism including a compartment and a plurality of first teeth in the compartment and a second ratcheting mechanism rotatably received in the compartment and including a plurality of second teeth engaged with the plurality of first teeth. The first ratcheting mechanism is rotatable relative to the second ratcheting mechanism in a single direction. The second ratcheting mechanism also includes a channel extending therein. A driving head is moveably received in the channel between two releasably fixed positions. In one position, the driving head is adapted to turn an element in a first direction. In another position, the driving head is adapted to turn the element in the second position opposite to the first position.

Abstract: A ratchet wrench assembly has a handle bar, a ratchet head and a connecting rod. The handle bar has a grip and a U-shaped ratchet mount. The U-shaped ratchet mount has two connecting holes. The connecting holes are respectively defined through the U-shaped ratchet mount and align with each other. The ratchet head is detachably mounted on the U-shaped ratchet mount and has a hollow housing, two connecting openings, a ratchet device and a pressing body. The connecting openings are respectively defined through the housing and respectively align with the connecting holes. The ratchet device is mounted in the housing. The pressing body is rotatably mounted through the ratchet device and has a through opening radially defined through the pressing body. The connecting rod is mounted through the connecting holes, the connecting openings and the through opening.

Abstract: A tool includes a shank, a driving device mounted on the first end of the shank and including a first ratcheting mechanism including a compartment and a plurality of first teeth in the compartment, and a second ratcheting mechanism rotatably received in the compartment and including a plurality of second teeth engaged with the plurality of first teeth. The first ratcheting mechanism is rotatable relative to the second ratcheting mechanism in a single direction. The second ratcheting mechanism also includes a channel extending therein. A driving head is moveably received in the channel between two releasably fixed positions. In one position, the driving head is adapted to turn an element in a first direction. In another position, the driving head is adapted to turn the element in the second position opposite to the first position.