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Product Feature Analysis
Material and Coating: Titanium Coating
Advantages: Titanium coating is a high-hardness, high-temperature-resistant surface treatment technology.
Enhanced Hardness and Wear Resistance: Extends drill bit lifespan, offering greater durability than standard high-speed steel drill bits.
Reduced Friction Coefficient: Ensures smoother drilling, minimizes chip adhesion, and improves heat dissipation.
Easy Identification: Features a distinctive golden appearance.
Shank Type: Round Shank
High Versatility: The most common drill shank type, compatible with all types of chucks for electric drills, bench drills, and hand drills.
Secure Clamping: Provides reliable holding force as long as the chuck is in good condition.
Size Range: 1mm - 10mm (0.5mm increments)
Complete Set: The 19-piece set offers exceptionally fine size intervals, ideal for tasks requiring precise hole diameters, such as:
Pilot holes for tapping: Many threading operations require specific pilot hole sizes, perfectly matched by this set.
Precision model making: Aircraft models, woodworking models, etc.
Electronics repair: Drilling holes in circuit boards or small plastic enclosures.
Metal/woodworking: Applications requiring a series of specific hole sizes.
Size List (Clear Version)
No. Size No. Size No. Size
1 1.0 mm 8 4.5 mm 15 8.0 mm
2 1.5 mm 9 5.0 mm 16 8.5 mm
3 2.0 mm 10 5.5 mm 17 9.0 mm
4 2.5 mm 11 6.0 mm 18 9.5 mm
5 3.0 mm 12 6.5 mm 19 10.0 mm
6 3.5 mm 13 7.0 mm
7 4.0 mm 14 7.5 mm
Recommended Applications and Materials
Wood: Highly suitable, produces clean, crisp holes.
Plastic: Excellent results, minimizes material cracking.
Soft Metals: Ideal for aluminum, copper, brass, etc.
Common Steel: Capable, but use cutting fluid and control speed/pressure to protect the drill bit.
Not Recommended For: High-hardness steel, stainless steel, concrete, tiles, and other hard/brittle materials.
Usage and Maintenance Recommendations
Selecting Appropriate Speed:
Basic Principle: Smaller drill diameters require higher speeds; larger diameters require lower speeds.
Example: Use high speed for 1mm holes; use low speed for 10mm holes.
Adjust speed when processing different materials (e.g., use low speed for metals).
Apply appropriate pressure:
Pressure should be steady and moderate. Too little pressure causes slippage and wear; too much pressure risks jamming or breaking the drill bit, especially for small diameters.
Maintain drill bit sharpness: Dull bits are inefficient and prone to overheating damage. Sharpen with a drill bit sharpener when necessary.
Store properly: After use, clean thoroughly and return to a dedicated drill bit case or storage rack to prevent edge damage from collisions.
Summary
This 19-piece round shank titanium-coated twist drill bit set represents a high-quality, versatile tool collection. Whether for home DIY enthusiasts or professional technicians, it meets precise drilling needs in wood, plastic, and most metals. The titanium coating delivers exceptional durability, while the comprehensive range ensures accurate performance.
