Sun Wings Self-Drilling Screw can be drilled into most of the hardwood to steel directly without split and fixed tightly.

　　　 　　　This screw has the following traits:

　　 　　　　▪ No pre-drilling (save time & money)

　　　　　　 ▪ Low drive torque

　　　　　 　▪ No flag & without burrs

　　　　　　 ▪ Seat cleanly

　　 　　　　▪ Drilling fast

　　 　　　　▪ Good holding power

-Materials-

Steel with Coating

(Zinc, Yellow Zin, E-Coating...etc)