50 Sizes in 5 High Speed Steel Unibit Drill Bits Set for Sheet Metal with Aluminum Case

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50 Sizes in 5 High Speed Steel Unibit Drill Bits Set for Sheet Metal with Aluminum Case  Technical Specifications
Measurements
Item Dimensions 4.92 x 1.97 x 6.3 inches
Minimum Bore Diameter 0.13 Inches
Materials & Care
Material Type High Speed Steel (HSS)
Finish Types Titanium Nitride
Shank Type Hex
Surface Recommendation Metal
Features & Specs
Cutting Angle String 135 Degreesv
Tool Flute Type Spiral
Point Style Step Point
Number of Flutes 4
One Kit Does It All
A 5-PC step drill set replaces dozens of bits.
Laser-Precise Steps
Each bit has permanent metric/imperial markings.
Dual Hex Shank
Fits both 1/4″ & 3/8″ drills/impact drivers.
Handles metal, wood & plastic
No more swapping—just seamless sizing up.
For Perfect Sizing
Stop at the exact diameter you need for electrical conduit, plumbing every time.
Swap in Seconds
Change bits overhead or in tight spaces without tools. Locked in, no slippage.

50 Sizes in 5 Pcs: The step drill bit kit includes 5 standard pieces with totally 50 sizes for versatility, enough for your DIY needs
HSS Titanium Coating: The step drill has excellent sharpness and durability due to its high speed steel material and titanium coating
135° Split Point Tip & Dual-flute Design: increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily
Widely Application: Ideal for drilling holes in plastic, aluminum, iron and many other types of sheet metal (Not recommended for stainless steel & wood)
Equipped with a well-organized case, make it more convenient for using and storing the step drills

Deburring, chamfering, cutting or expanding holes
Support tools: pistol drill, hand drill, charging drill, bench drill. (Water cooling during work can effectively extend the life of the drill bit, especially for continuous drilling)
Application: High quality shavings removal and heat dissipation, low cutting resistance, ideal for cutting
Advantages: Suitable for drill wood, iron, aluminum alloy, insulation board, PVC sheet
Unique Design: High precision, no burrs when drilling and easy to install Black Oxide Solid M2 Step Drill Bit Hexagonal Shank for Primary 19 Hole Sizes

Designed for electricians, plumbers, and HVAC contractors, these bits feature an innovative Split Point Tip for fast, accurate starts and up to 6X longer life, while an automated precision grinding process ensures 2X faster cuts with minimal wear. With laser-etched step markings for multiple hole sizes, increased step heights for efficiency, and a ¼” hex shank for compatibility with drills and impact drivers, FLINTOOLS’s Step Drill Bits deliver unmatched performance in thin metals, PVC, and other plastics!  HSS6542 M2 Black Oxide Step Drill Bit With 3/8″ Hexagonal Shank 3/16″ to 1-3/8″ For Metal