Details: * fresh and excessive quality.*Material: carbon steel*Color: Black*Size: M8X18mm (As photograph show)*High strength and hardness.*Not smooth to rust.*Convenient to use.Package Contents:5*ScrewNote:1.The genuine coloration of the article may be slightly different from the pictures proven on online page attributable to many factors resembling brightness of your visual display unit and lightweight brightness.2.Please allow slight guide measurement deviation for the data.