Tornado Ribs:

1. Keep the object surface free of tailings around the edges of the screw head
2. No splits on the surface close to the edge of object
3. Keep the object surface flat and smooth
4. Worldwide patents protection

Torpedo Pre-milling Thread:

1. Fast grip onto soft/hard wood
2. No split even close to the edge of soft/hard wood
3. Low driving torque for fast driving, on soft/hard wood
4. Long life KTX-Nano Coating protection or A2/A4 stainless steel available for real anti-corrosion purpose and is acceptable for use with ACQ lumber
5. High ductility (bending angle >30o) by special quenching and tempering
6. High and safe pull-out value for security purpose
7. Screw can be installed by RPM 4000 screwdriver
8. Worldwide patents protection