1600Pcs Metric Screw Assortment,M2 M3 M4 M5 Metric Bolt Assortment,304 Stainless ?Larger Quantity More Choices?: The metric bolt assortment include various M2 M3 M4 M5 screws and bolts with lock flat washers, total 1600 pcs. 16 sizes more choices. M2 screws:4mm,6mm,10mm,12mm, M3 screws: 6mm,8mm,12mm,16mm, M4 screws: 8mm,12mm,16mm,20mm, M5 screws: 12mm,16mm,20mm,25mm. ?High Quality 304 Stainless Steel?: The metric screw assortment is made of high quality 304 stainless steel(slightly magnetic due to iron in alloy), which features is sturdy hard and have reinforced rust resistance and the excellent of oxidation resistance, which can ensure long time using. ?Wide Application?: Bolts and nuts kit have more quantities and sizes,can be widely used.These screws are suitable for a variety of manual DIY projects, including 3D printing and RC racing projects, furniture repair, and screw replacement for some instruments and equipment etc. ?Handy Sturdy Storage Box?: This metric screw set is organized by size in a durable and sturdy case, when you receive the product, there will be no mixed and box-breaking situation.There is a sticker on both sides of the lid listing what is in each compartment, you can quickly and easily find the size you need. ?Satisfaction Guarantee?: SATANTECH metric bolts and nuts kit have a 2-year warranty. If you have any question or suggestion, please feel free to contact us anytime.We will give you a professional service and reply you within 24 hours.