Features: -7 common sizes: M3 M4 M5 M6 M8 M10 M12, a total of 105 pieces enough to meet your daily needs. -Made of high quality 304 stainless steel, anti -Corrosion and rust proof, strong and durable. -Tooth Design: Increases frictional resistance between end faces, prevents loosening. -Commonly used in steel construction, construction wood, machinery and furniture. Ideal for a DIY project or part replacement. -All stainless steel flange nuts are stored in a sorted storage box with spec sheet, easy to identify and store. < br/> Specifications: Nut Type: Hex Serrated Flange Nut Material: 304 Stainless Steel Color: Silver Size: M3 M4 M5 M6 M8 M10 M12 /> Weight: 390 g Quantity: 105 pieces Package included: 30 pieces x M3 20 pieces x M4 20 pieces x M5< br/> 15pcs x M6 10pcs x M8 5pcs x M10 5pcs x M12 Warm Tip: Please check the size before buying to avoid an unpleasant shopping experience. Your satisfaction is our ultimate goal, if you have any questions, please feel free to contact us, we