About this item

• The step drill bit are made of high speed steel, strong and durable, fit for drilling holes in stainless steel sheet, aluminum alloy, plastic material and wood(the board must be smaller in thickness than the height of step drill bits, thickness not exceed 0.12 inch/3mm).
• The Titanium coating resists the drill bits from corrosion and rust, deduces friction making it easily to do multiple drills on surfaces such as plastic, aluminum, copper, stainless steel, and other types of sheet metal.
• The step drill bit set includes five standard step drill bits that can replace 50 individual drill bits and process 50 different kinds of diameter holes,meet various drilling hole requirements.
• X-shape cutting blades design enables a faster and smoother cutting.1/4 "or 3/8" rods are compatible with most electric drilling tools, suitable for Home DIY, and General Building/Engineering Use.
• Satisfaction guaranteed! Try any product we sell for a full 30 days. If not completely satisfied, return it to us for a no-hassle refund or credit.