M3 Carbon Steel Button Head Socket Cap Screw Qty 120-piece Assortment Set with Allen Wrench M3 button head socket cap screws kit,Metric,120-pieces,Thread Dia. 3mm Kit contains:M3 X 4 mm,20-piece; M3 X 6 mm,20-piece; M3 X 8 mm,20-piece; M3 X 12 mm,20-piece; M3 X 16 mm,20-piece; M3 X 20 mm, 20-piece Comes with an Allen wrench,fit M3 socket screws Comes with a Plastic Organizer Box for Storage Material: Carbon Steel. Drive: Hex Drive