Epitorque.com Epi-Torque Metric M3, M4, M5, M6, M8 Allen Head Socket Hex Gurb Screw Set with Matching Allen Keys 12.9 Class are made of high quality alloy black steel which is one of the high forms of corrosion resistance metals making it last longer than other hardware material available in market today. Package Contents: M3 X 3 – 30 Pcs M3 X 4 – 30 Pcs M3 X 6 – 30 Pcs M4 X 4 – 30 Pcs M4 X 6 – 30 Pcs M5 X 5 – 30 Pcs M5 X 8 – 20 Pcs M6 X 6 – 20 Pcs M6 X 10 – 20 Pcs M8 X 8 – 20 Pcs Epi-Torque Allen Gurb Screw Benefits: The threads of Allen gurb screws are clear & deep which has a good fastening effect that gives great strength and durability. Our focus is on Making Every type of Screws, Fasteners, Micro Screws Nails, Anchors, bolts, Nuts and Washers as well as hard to finds quality products & making them easily available & moreover in a Budget Friendly price. Our Customers are DIY Person