129 Grade M3 x 40mm Alloy Steel Hex Socket Head Cap Bolts with Storage Box 25PCS

?1?This is a great little kit for people who like to tinker. The quality of the parts is excellent. ?2?Material: Made of high quality 12.9 grade alloy steel, which features is strength and offers good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas. They have superior rust resistance and the excellent of oxidation resistance, which can ensure long time using. ?3?PACKAGE? All of Bolts and Nuts are packed in a durable and sturdy Box to efficiently bear the weight of the whole package. ?4?WIDE APPLICATIONS?M3 Hex Socket Head Bolts and Nuts Assortment Kit Serves a wide range of use and for professionals, amateurs, landlords, repairmen, other DIY . ?5?Environment Friendly: It's made from high-quality elements and promotes environmental protection and is guaranteed to be mercury-free and toxic-free generally making it poison-free.