Self-drilling screws:
material : C1022
head type : bugle,pan ,truss , pan farming ,csk
drive :phillips ,square ,pozi
thread type :twin thread
dia: from 3.9mm to 6.3mm ,or as your required
length : from 13mm to 125mm ,or as your required .
surface: phosphated : black /grey color ,galvanized: white /yellow color

Our company mainly produce drywall screws,self-drilling screws,self-tapping screws,chipboard screws,we can produce as your required .