*Shank Diameter:BWG8-12
*Material:#55 steel ，carbon steel
*Head type:Checkered head /Large round head
*Point:Diamond point
*Shank:Grooved shank /Twisted shank /Straight shank / Smooth shank /Fluted shank
*Diameter :BWG8-13
*Lengh:1-4"
*Harden:High harden /Hardening
*Finished: Electro Galvanized ,hot galvanized ,black