Screws are easily grasped with the screwdriver, and align with the screw head direction.Includes a quantity scale that allows the number of screws arranged on the plate to be seen at a glance.Compatible with pan head, countersunk head, raised countersunk head, truss head, pressure, and binding screws.[Procedure] Pile a suitable amount of applicable screws in the center of the dish and shake the dish in all directions to align the screws.[Applicable Size (Thread Diameter)] φ1.4-φ1.7, φ2-φ2.6, φ3-φ4