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Home/DIY & Tools/Power, Garden & Hand Tools/Power Tool Accessories/Drill Bits/Twist Bits/Extra Long Drill Bits
KooingTech 4mm HSS Extra Long Drill Bit, 200mm HSS Twist Bit Straight Shank Auger Drill โ€” image 1
Extra Long Drill BitsKooingTechโœ“ In stock

KooingTech 4mm HSS Extra Long Drill Bit, 200mm HSS Twist Bit Straight Shank Auger Drill

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$22.99
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About this item
  • Durable high-speed steel drill bit: made of high-speed steel material, specially designed for impact applications, with heat and extended service life
  • Chip removal system: Unique deep cutting spiral groove design for rapid debris removal, optimized coolant delivery system to prevent material accumulation during continuous metal processing
  • Advanced surface treatment: Special coating retains cutting fluid to prevent debris adhesion, improves cutting geometry to reduce chip accumulation and formation
  • Multi mechanical adaptability: straight handle design, compatible with handheld drills/drilling machines/lathes, standardized 8mm handle diameter for faster drill bit replacement
  • Precision cutting application: suitable for building drilling and metal processing, maintaining a precision of ยฑ 0.05 millimeters in the processing configuration
Product description

Specification: Product Name: Twist Drill Bit Design: Straight Shank Material: HSS Diameter and total length: 4mm Twist bit, 200mm total length ๏ปฟ Package include: 1 x Twist Drill Bit

Product details
Brand
KooingTech
Manufacturer
KooingTech
Material
High Speed Steel (HSS)
Size
4mm
Part number
KooingTechrb5k4vspzo

Customer reviews

What customers say about Bigamart

10 Trustpilot reviews total, with 2 shown at a time.

Trustpilot
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Excellent
4.5 average rating
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S
Sigalit
๐Ÿ‡ฎ๐Ÿ‡ฑ ยท January 2026
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I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

V
Verified buyer
๐Ÿ‡ฆ๐Ÿ‡บ ยท November 2025
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The package was here in Australia from England in a few days โ€” so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

Showing 1โ€“2 of 10 reviews

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