Product Name : C1022 DIN7504K Hexagonal Washer Head Self Drilling Screw.
Materis: Stainless,Carbons
Features:
1.Faster to install saving time and money.
2.Easier to use, requiring less end load pressure.
3.Can be drilled on steep sloping roofs or near the edge of sheeting.
4.Reduces the amount of swarf.