Abstract: An impact socket wrench provides a hammering space for generating a hammering or striking effect. The hammering space is alternatively provided by an attachment assembly fitted between a conventional wrench handle and socket head of a conventional socket wrench. The attachment assembly comprises an upper adapter and a lower adapter for mounting on a conventional socket wrench. When screwing or unscrewing a screw or the like, the hammering space of the socket wrench or attachment assembly allows the generation of a hammering or striking force without using an external force or tool such as a hammer of the like to hit the wrench handle. Both the socket wrench and attachment assembly achieve the hammering affect by utilizing a substantially diamond-shaped head pinned between the socket wrench handle and the socket head. The diamond-shaped head allows relative movement between the handle and the socket for generating hammering forces.