Head Diameter: 9.8mm; Head Height: 4.1mm; Drive Type: Allen Hex Socket 3mm;
Package Included: M3 x 8mm(20PCS), M3 x 12mm(20PCS), M3 x 16mm(20PCS), M3 x 20mm(20PCS), M3 x 25mm(20PCS); Total: 100PCS.
It Is Made Of High Quality 10.9 Grade Alloy Steel, And The Surface Is Treated With Black Oxide. They Have Excellent Corrosion Resistance, Firmness, Wear Resistance And Low Temperature Resistance.
Widely Used In Engineering, Assembly Cars And Product Manufacturing And Other Precision Machinery Industries. It Is Famous For Its Efficient Application Performance And Durability.