1、150 Pieces Set: The set contains 75pcs M5 screws and 75pcs M5 nuts, the screw specifications are M5x10 M5x16 M5x20 M5x25 M5x30, 15pcs for each specification. 2、Standard and Precise: M5 hex socket screws and nuts conform to the standardized metric system, and the average error is less than 0.01mm. 3、Compact and Uniform Thread: The thread is compact and the force is uniform, not easy to deform and slide during the roll on and installation process. 4、304 Stainless Steel Made: Made of 304 stainless steel material, with high strength, resistant to corrosion, rust and oxidation, durable in harsh environments such as high temperature, cold weather and high humidity areas. 5、Wide Usage: Screw nut kit is applicable to all kinds of precise machinery, classification instrument, instrument, electronic product, household appliance, communication product, lock, lamp, lighting, toy, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store