Common-used M3 Hexgon Spacing Bar Screw Kit

Description A good start and necessary kit for mechanical project, the package includes: 50pcs M3 nut 5pcs of: Spacing bar only: M3*5 M3*8 M3*10 M3*12 Spacing bar with screw: M3*5 6  M3*6 6  M3*8 6  M3*10 6  M3*12 6  M3*15 6