Description of TAICHIV Titanium Automatic Aluminum Multiple
High Speed Steel with Titanium Coating. Drills holes of various sizes without changing bits. For Cutting Drilling Holes On Stainelss Steel, Steel, Metal Sheet. Minimal shocks and almost impossible to snap compared to conventional bits. AUTOMATIC CENTER PUNCH: Delivers an automatic, high-impact, spring-loaded strike when pressed against surface, adjustable cap regulates striking force. TITANIUM COATING: Coated by titanium, this step drill set performs well in heat, corrosion and rust resistance.