【Fine Screw Compatibility】The Digital Screw Counting Machine features an adjustable hopper track accommodating 1mm-5mm screws, including machine screws, self-tapping screws, round heads, flat heads, and washer screws, suitable for screws with diameters from 1.0 to 5.0mm and lengths up to 20mm. 【Screw Counter】This Automatic Screw Counting Machine provides precise digital counting, accurately tracking each screw dispensed up to a maximum of 9999, aiding in efficient production management. 【Digital Display Function】Equipped with digital counting and reminder features, this machine offers auto, manual, and normal modes for accurate recording of dispensed screws. 【All-Metal Thickened Silo】Pour screws into the robust metal silo, and the drum will rotate upon activation. Adjust the brush position for precise screw alignment and continuous feeding. 【Wide Application】Ideal for self-tapping screws, ferrous metal screws, flat heads screws, and washer screws. Perfect for electronic assembly in toys, communication devices, home appliances, and automotive components.