【Fine Screw Compatibility】Digital Screw Counting Machine comes with a hopper. The adjustable track covers 1mm-5mm, compatible with multiple screw types such as machine screws, self-tapping screws, round heads, flat heads and washer screws. It fits screws with 1.0-5.0mm diameters and length below 20mm to meet various counting demands. 【 Screw Counter】Automatic Screw Counting Machine features accurate digital counting functionality, precisely recording each screw dispensed with a maximum count of 9999, ensuring standardized and production management 【Digital Display Function】: Built with digital counting and prompt reminder features, this Screw Counting Machine supports auto, manual and normal working modes. It accurately records each screw dispensed. 【All-Metal Thickened Silo】Pour screws into the thickened metal silo, and the drum will rotate after startup. Adjust the brush position to align screws properly and realize stable and continuous feeding. 【Wide Application】Suitable for self-tapping screws, ferrous metal screws, flat heads screws and washer screws. Great for electronic assembly of toys, communication equipment, home appliances and auto parts.