Bi-Metal Screws is made of hardened carbon drill point welded to the stainless steel body and head. The specification is outstanding corrosion resistance for all outdoor use in tough environments with strong drilling point.
Size: M3.5 - M8、#6 - 5/16
Length: 19 - 330mm、5/8" - 13"
Point: #1 - #8 Drilling Point with tek wings