Mass Pro Heavy duty Professional tool Step Drill bit 4-20mm Good 1Pc Step Drill Size 4~20mm
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HSS & Titanium Coating - High speed steel makes it last longer than others, titanium coating ensures easily cut through steel sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease.Good Design - Hex 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.Split point tip increases speed.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.