ITEM NAME:High Quality Stainless Steel Screws Nuts Assortment Set Kit /M3 M4 M5 Hex Socket Description: Used widely in the home and office appliance, communication equipments, ship assembly and other machinery industry Made of high quality stainless steel, the stainless steel material provides strength and offers good corrosion resistance in many environments. Different size of M3 M4 M5 screws and nuts, there are totally 515 pieces in a clear box which are commonly used size Easy to use and install High quality ,durable Specification: Material: Stainless steel Overall size: Approx.170×100×24 mm/6.69×3.94×0.94 inch Color: As picture show Package Includes: 1 Piece Box 30 Pieces M3 * 8 30 Pieces M3 * 12 30 Pieces M3 * 16 30 Pieces M3 * 20 - 125 Pieces M3 Nuts 20 Pieces M4 * 8 20 Pieces M4 * 12 20 Pieces M4 * 16 20 Pieces M4 * 20 - 85 Pices M4 Nuts 15 Pieces M5 * 8 15 Pieces M5 * 12 10 Pieces M5 * 16 10 Pieces M5 * 20 - 55 Pieces M5 Nuts SKU: DMO0022747679001552.Different size of M3 M4 M5 screws and nuts, there are totally 515 pieces in a clear box which are commonly used size. 20 Pieces M4 8. 20 Pieces M4 12. 20 Pieces M4 16. - 85 Pices M4 Nuts. 20 Pieces M4 20.