Abstract: A screwdriver helper includes a handle, a guide, and a bit. The handle defines a through hole therein. The guide is affixed to the handle. The guide comprises a top surface, a bottom surface, and a through guide hole defined between the top surface and the bottom surface. The top surface is faced to the handle. The guide hole is corresponding to the through hole of the handle. An axis of the guide hole is perpendicular to the bottom surface. The bit is positioned in the guide hole. The bit comprises a tip and a head. The tip is in a shape of a screw head. The head defines slots in a top end thereof. The bit is movable along the axis of the through guide hole. The screwdriver helper helps screwdriver to lock screws firmly.

Abstract: A clamp tool for circuit board is disclosed. The clamp tool includes a frame, a handle, a plurality of gripping shafts, and a lock. The frame defines two vertical grooves facing each other. The handle is mounted on top of the frame. The gripping shafts are mounted beneath the frame, and include protuberant gripping heads on an end thereof. The lock includes a pull rod and a locking shaft. The pull rod passes through the vertical grooves and connects with the frame by elastic pieces. The locking shaft is mounted beneath the pull rod. The clamp tool is used to move circuit boards.

Abstract: A screwdriver helper includes a handle, a guide, and a bit. The handle defines a through hole therein. The guide is affixed to the handle. The guide comprises a top surface, a bottom surface, and a through guide hole defined between the top surface and the bottom surface. The top surface is faced to the handle. The guide hole is corresponding to the through hole of the handle. An axis of the guide hole is perpendicular to the bottom surface. The bit is positioned in the guide hole. The bit comprises a tip and a head. The tip is in a shape of a screw head. The head defines slots in a top end thereof. The bit is movable along the axis of the through guide hole. The screwdriver helper helps screwdriver to lock screws firmly.

Abstract: A clamp tool for circuit board is disclosed. The clamp tool includes a frame, a handle, a plurality of gripping shafts, and a locking means. The frame defines two vertical grooves facing to each other. The handle is mounted on top of the frame. The gripping shafts are mounted beneath the frame, and include protuberant gripping heads on an end thereof. The locking means includes a pull rod and a locking shaft. The pull rod passes through the vertical grooves and connects with the frame by elastic pieces. The locking shaft is mounted beneath the pull rod. The clamp tool is used to move circuit boards.