Details: * fresh and excessive quality.*Material: carbon steel*Color: Black*Size: M8X18mm (As photograph show)*High power and hardness.*Not clean to rust.*Convenient to use.Package Contents:5*ScrewNote:1.The real colour of the item could also be slightly diversified from the photographs proven on web page attributable to many factors such as brightness of your visual display unit and lightweight brightness.2.Please enable slight handbook measurement deviation for the data.