1 Black carbon steel, high hardness, not easy to break, long service life. 2 Carbon steel is blackening treatment, it is not easy to rust, protect the workpiece. 3 M2, M3, M4 metric standard size for daily basic maintenance and installation and DIY requirements. 4 A variety of specifications to meet different needs. 5 Well packed and assorted in a resealable transparent box for convenient storage and carry.

What's in the box
1080 x Black Carbon Steel Screw Nut Bolt Washer Wrench Set