Abstract: A seat for guiding screws and nails includes a block having two opposite vertical lateral sides and two opposite ends, each of the sides being formed with a plurality of semi-circular holes, and a rectangular opening extending through the two opposite ends, whereby a jaw of a longnose pliers may be inserted into the rectangular opening of the trapezium block to keep the trapezium block at a fixed position thereby enabling a screw or the like to be guided safely, rapidly and accurately by the vertical passage between the semi-circular hole and another jaw of the longnose pliers to a workpiece.