5 Pcs Four Spiral Flute Step Bits Set & 5 Pcs Countersink Bits Nitriding HSS Drill Bits for Metal, Aluminum, Wood, Plastic

5 Pcs Four Spiral Flute Step Bits Set & 5 Pcs Countersink Bits Nitriding HSS Drill Bits for Metal, Aluminum, Wood, Plastic, M35 Cobalt Step Drill Bits HSS, 1/4″ Hex Shank Stepped Drill Bits for Stainless Steel, Aluminum, Copper, Wood, Plastic & Sheet Metal, High Speed Steel Titanium Coated Step Drill Set Straight Flute, Step Drilling Bit Set, HSS Titanium Coated Step Drill Bit Drilling Power Tools, Drillbit Step Bit, HSS Step Drill Bit 3-flat Shank Set, High Speed Steel Step Drill Bits, HSS Step Twist Drill Bits China Supplier Factory

5 Pcs Four Spiral Flute Step Bits Set & 5 Pcs Countersink Bits Nitriding HSS Drill Bits for Metal, Aluminum, Wood, Plastic  Technical Specifications
Material Type High Speed Steel (HSS)
Finish Types Titanium Nitride
Shank Type Straight
Surface Recommendation Metal, Plastic, Stainless Steel, Wood
Features & Specs
Cutting Angle String 118 Degrees
Tool Flute Type Spiral
Point Style Step Point
Number of Flutes 4

ENHANCED DURABILITY: Our industrial-grade step drill set & countersink drill bit set is meticulously crafted from high-quality alloy steel and undergoes multiple manufacturing processes. Each drill bit is carefully inspected at the factory to ensure superior quality and longevity.
IMPROVED STABILITY: Unlike ordinary step drills that often suffer from deflection during cutting, our four-flute step drill bit provides exceptional stability. This feature enhances accuracy and cutting speed, making it perfect for stainless steel drilling. In fact, it offers a significantly longer service life compared to regular step drills.
NITRIDING BIT KIT: Our 10 Pcs nitriding step and countersink bits set includes a range of sizes to cater to various drilling needs. The set comprises step bits with diameters of /16″-1/2″ (6 steps), 1/8″-1/2″ (13 steps), 1/4″-3/4″ (9 steps), 3/16″-7/8″ (12 steps), and 3/16″-1-3/8″ (19 steps). Countersink Drill Bits sizes1/4”, ”3/8”, 1/2”, 5/8”, 3/4”.
VERSATILE DRILLING CAPABILITY: With its powerful drilling capability, our step drill is suitable for piercing holes in various materials, including thin metal, copper, aluminum, iron, carbon steel, wood, and plastic. It’s an essential addition to any DIY enthusiast’s toolbox and can be utilized for a wide range of household projects.
USER-FRIENDLY DESIGN: Our step drill bits feature laser-engraved step sizes, ensuring clear visibility and eliminating concerns about wear and tear during use. This design element enhances convenience and accuracy, making the drilling process easier and more efficient. 12 Sizes 1/4″ Hex Shank M35 HSS Cobalt TiAlN Coating Step Drill Bit 3/16″ to 7/8″ Spiral Flute

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 9 Sizes 1/4″ Hex Shank M35 HSS Cobalt Step Bit 1/4″ to 3/4″ Four Spiral Flute
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!   13 Sizes HSS M35 Cobalt Step Bit 1/8″ to 1/2″ Four Spiral Flute Step Point Drill Bit