Why Choose LuKaiSen 330PCS 12.9 Class Black Alloy Steel M2.5/M3/M4/M5/M6/M8 Hex Drive Cup-Point Set Screws Assortment Kit? About LuKaiSen 12.9 Class Black Alloy Steel Hex Drive Cup-Point Grub Screws Set Screw Assortment - The Most Common Used Size: After our survey, we selected the most commonly used set screws of 15 sizes. Almost perfect for all kinds of scenes of our daily lives. - Top 12.9 Class Alloy Steel Material: These doors handle replacement screws are made of 12.9-grade alloy steel, which has high hardness and splendid corrosion resistance, with a longer time for service. Besides, they also have deep and sharp threads with even force, which will not slip out during rotation. - Wide Range of Uses: Widely used for small repairs such as door handles, bathroom, faucets, lamps, knobs, ordnance repairs and plumbers, etc. Specifications - Color: Black. - Quality: 330 Pieces. - Weight: 0.6 Pounds. - Head Type: Cone Point. - Material: 12.9 Class Alloy Steel. - Name: 330PCS 12.9 Class Black Alloy Steel M2.5/M3/M4/M5/M6/M8 Hex Drive Cup-Point Set Screws Assortment Kit. -Sizes: M2.5*4mm, M2.5*5mm, M3*3mm, M3*4mm, M3*10mm, M4*4mm, M4*6mm, M4*8mm, M5*5mm, M5*8mm, M5*10mm, M6*6mm, M6*10mm, M8*8mm, M8*12mm. What You Get - 20pcs M2.5*4mm - 20pcs M2.5*5mm - 25pcs M3*3mm - 25pcs M3*4mm - 20pcs M3*10mm - 25pcs M4*4mm - 25pcs M4*6mm - 20pcsM4*8mm - 25pcs M5*5mm - 25pcs M5*8mm - 20pcs M5*10mm - 20pcs M6*6mm - 20pcs M6*10mm - 20pcs M8*8mm - 20pcs M8*12mm - 6pcs Hex Wrenchs - 1pc Storage Box - 1-Year Manufacturer's Warranty and 30 Days No-Questions-Asked Return Policy NOTE: Please check the size carefully before purchasing, thanks for your support.