440pcs Stainless Steel Hexagon Socket Round H-ead Screw Nut Kit Set with Storage Box Portable

Features:
Made of endurable reliable stainless steel, solid and sturdy, providing you long-lasting use.
Comes with storage box design makes you easy carrying and it is space-saving.
Suitable to apply in m-any kinds of heavy duty materials, including sheet metal, steel, aluminum, plastic, fiberglass etc.
IncludingM3/M4/M5diverse screw for different needs.