5PCS Four Spiral Flute Step Bits for Metal 50 Sizes Holes

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5PCS Four Spiral Flute Step Bits for Metal 50 Sizes Holes  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.

Handle Drilling Tasks with Ease: With four sharp cutting blades,  step drill bit set ensures swift, smooth drilling, effortlessly cutting through steel, aluminum, copper, and other tough materials like a hot knife through butter!
Titanium-Coated HSS Build: Crafted from robust high-speed steel with a titanium coating, our drill bits ensure superior hardness for faster cutting through harder materials while withstanding high temperatures and cutting forces, ensuring lasting performance.
50 Sizes Comprehensive Drill Bit Set: Our 5-piece step bit set caters to diverse drilling needs, with diameters ranging from 3/16″ to 1/2″ (6 steps), 1/8″ to 1/2″ (13 steps), 1/4″ to 3/4″ (9 steps), 3/16″ to 7/8″ (12 steps), and 1/4″ to 1-3/8″ (10 steps).
Quick Release & Tapered Edge Design: The 1/4″ hex shank and quick-release slot ensure secure connections and easy changes. The four-spiral flute design effectively evacuates chips from the hole, reducing the likelihood of clogging and improving drilling efficiency.
Easy Organization & Identification: Our step drill bits for metal come with a handy storage case, ensuring effortless organization and portability for all your drilling tasks. Clear size markings on each bit allow for quick identification.

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

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