4-12mm Step Drill Bit 1/4 inch for Sheet Metal Drilling DIY Spiral Groove

Description: HSS & Titanium Coating - High speed steel makes it last longer than others titanium coating ensures easily cut through steel sheets aluminum sheets copper wood board and many other types of sheet metal with ease. Good Design - 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 . Split increases speed. A necessity for family or handyman or professionals - Perfect for home repairs and light jobs such as drilling holes in aluminum copper and many other types of sheet metal. Specification: 4-12mm Size Chart: Total Length: 67mm / 2.64inch : 6.35mm / 0.25inch Package Includes: 1 Piece Step Drill Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect the actual color of the item might be slightly different from the color showed on the pictures.Thank you!