Mengshen Titanium Step Drill Bit 3 Piece Set, 4-12mm/4-20mm/4-32mm HSS Triangle Handle Pagoda Drill for Carbon Steel, Sheet Iron, Insulation Boards, PVC Boards and Wood

OverviewHigh Speed Steel - Suitable for below 25 hardness of the work piece, such as carbon steel, sheet iron, insulation boards, PVC boards, planks, and wood thickness below 5MM. | Titanium Coating - Coated with titanium, this step drill set performs well in heat, corrosion and rust resistance. | Good Design - Triangle shank fits into power tools chuck securely and eliminates slip; two-flute design clears chips faster and allows particles to escape easily. | It can automatically deburr holes while drilling to keep the drill bit clean. | A necessity for family or handyman or professionals - Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper and many other types of sheet metal.