The present invention discloses an angle-adjustable crowbar that comprises a crowbar body and a crowbar head. The crowbar head includes a first hinge base and a second hinge base in a spaced manner, and a head of the crowbar body is rotatably mounted between the first hinge base and the second hinge base through an angle adjustment mechanism. The angle adjustment mechanism comprises a limit shaft penetrating through the first hinge base, the crowbar body and the second hinge base, a first tooth portion, a polygonal limit portion and a second tooth portion are sequentially disposed on an outer wall of the limit shaft in an axial direction. The angle-adjustable crowbar overcomes the defects that the limit strength of existing crowbars is weak, the tooth portion is unlikely to be damaged, and the crowbar head cannot be replaced.

A safety hammer is provided that may be designed to prevent injuries caused by flying nails when users accidentally fail to strike nails on their heads. The present invention may provide for a wooden handle with finger grooves. The wooden handle may be reinforced with a steel rod to add strength and attach the handle to the tempered steel head. Close to the end used for striking nails, the present invention may provide for a pin configured to attach the metal shield to the end used for striking nails. The track in the shield may fit over the pin to ensure the pin is positioned correctly around the face of the present invention's hammer face. In some embodiments, the shield may be secured by magnets, which may be embedded around the present invention's hammer head. The present invention may also provide for a fulcrum point that may be oriented above the nail removal portion of the present invention.

A hammer has a claw assembly that is linearly moveable relative to the head of the hammer so as to improve leverage and range of prying for nail removal. A locking mechanism secures the claw assembly in a position. The locking mechanism may be automatic or manual, and may comprise a ratcheting mechanism with a pawl and rack, or a clamping mechanism with a deflectable sleeve and engaged bar, or a biased pin lock mechanism.

A forged hammer head formed in a forging process comprises a forged hammer face at one end of the head; a forged hammer claw at an end of the head opposite the face; and a forged side nail puller disposed between the face and the claw. A method for forming a hammer head comprises sequentially placing a blank in a series of cooperating forging dies, and sequentially shaping the blank in the forging dies into a hammer head, a hammer claw, a hammer face and a side nail puller disposed between the face and the claw. The side nail puller is configured to engage and pull a nail from a workpiece. The side nail puller comprises a side wall and a notch formed in the side wall. A tool parting line of the forging process does not intersect the notch.

A tool, such as a hammer including a handle configured to be replaceable is shown. In one embodiment, the handle includes a grip insert coupled to the shaft of the hammer and an outer grip surrounding the grip insert. In another embodiment, the hammer includes a shaft with a pair of opposing channels. The handle includes a grip insert with a pair of corresponding projections to couple to the pair of opposing channels and an outer grip surrounding the grip insert.

A striking tool head assembly is detachably connected to a handle. The assembly includes multiple components, including a head body having an open-ended internal cavity configured to receive an end of the handle therein and a striking portion extending from the head body. A striking member is detachably connected to a free end of the striking portion. A claw member is detachably connected to an upper surface of the head body. The claw member defines spaced-apart first and second elongated claw portions.