Abstract: At least one embodiment in accordance with the present invention provides a wrench comprising a wrench head, a button configured to the wrench, a protective layer configured on the button, a rod-like body connected to the wrench head, and a handle connected to the rod-like body. At least one embodiment in accordance with the present invention provides a coating method for coating a protective layer on a button of a wrench.

Abstract: A hand tool includes a shaft, at least one affecting portion, and a protection layer. The shaft is like a bar, and can be hold by a hand. The affecting portion connects with the shaft. The affecting portion can grip a specific part which a user wants to control. The protection layer is settled and/or covered on at least one portion of the hand tool surface. The protection layer is lumpy and rough. Because of the protection layer, the hand tool is shake-proof, wear-proof, slip-resistance, and electric insulation.

Abstract: The invention proposes a hand tool comprising a handle, at least one operating portion, an elastic layer and a protective layer. The handle is a region for a user to hold and apply force. The at least one operating portion connected with the handle has different shapes based on different elements engaged with. The elastic layer set on at least a part of surface of the hand tool is used to absorb vibration and acting force when using the hand tool. The protective layer set on the elastic layer is flexible and contractible and therefore prevents components of the hand tool from loosening and being abraded. The protective layer is further provided with a texture surface comprising a convex surface and a concave surface to increase friction.

Abstract: A hand tool includes a shaft, at least one affecting portion, and a protection layer. The shaft is like a bar, and can be hold by a hand. The affecting portion connects with the shaft. The affecting portion can grip a specific part which a user wants to control. The protection layer is settled and/or covered on at least one portion of the hand tool surface. The protection layer is lumpy and rough. Because of the protection layer, the hand tool is shake-proof, wear-proof, slip-resistance, and electric insulation.