




4mm * 5
Product Specifications
Established brand with 30 years of quality assurance
Recognized as a famous trademark in Shandong Province
Listed among top 20 domestic and international hardware tool enterprises
Multiple authoritative certifications ensuring strict quality control
Featured in national tool and hardware rankings and quality markets
High hardness M35 high cobalt twist drill bits for durability and sharpness
Capable of drilling through 30mm thick steel plates quickly and efficiently
Precision positioning for fast and accurate hole drilling with smooth hole walls
Double rear cutting edge angle (135°) for faster and cleaner drilling
Enlarged U-shaped chip removal grooves to prevent clogging and overheating
High-speed steel (HSS-Co) construction for enhanced wear resistance and high-speed operation

5-Piece Twist Drill Bit Set
CNÂ¥21.78
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Yi Tiao Fen Xin Zuan [6mm], 1 Piece
CNÂ¥11.90
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Tilted eccentric drill bit [10mm] 1 piece
CNÂ¥20.90
Suitable for drilling thick stainless steel, thick copper plates, and stainless steel pipes
Compatible with a wide range of drilling machines including electric drills, lithium drills, impact drills, and bench drills
Designed for both household and industrial use
Multiple authoritative certifications ensuring product reliability and safety
0.8mm / 8mm / 0.8mm / 28mm
1.0mm / 12mm / 1.0mm / 34mm
1.2mm / 16mm / 1.2mm / 36mm
1.5mm / 17mm / 1.5mm / 39mm
1.8mm / 20mm / 1.8mm / 45mm
2.0mm / 24mm / 2.0mm / 49mm
2.2mm / 21mm / 2.2mm / 48mm
2.5mm / 30mm / 2.5mm / 57mm
2.6mm / 29mm / 2.6mm / 58mm
2.8mm / 38mm / 2.8mm / 60.3mm
3.0mm / 34mm / 3.0mm / 60mm
3.2mm / 35mm / 3.2mm / 64mm
3.3mm / 40mm / 3.3mm / 70mm
3.4mm / 38mm / 3.4mm / 68mm
3.5mm / 39mm / 3.5mm / 69mm
3.8mm / 42mm / 3.8mm / 72mm
4.0mm / 42mm / 4.0mm / 74mm
4.2mm / 42mm / 4.2mm / 74mm
4.3mm / 45mm / 4.3mm / 76mm
4.5mm / 48mm / 4.5mm / 80mm
4.8mm / 52mm / 4.8mm / 85mm
5.0mm / 53mm / 5.0mm / 85mm
5.2mm / 53mm / 5.2mm / 85mm
5.3mm / 55mm / 5.3mm / 91mm
5.5mm / 60mm / 5.5mm / 92mm
6.0mm / 58mm / 6.0mm / 92mm
6.2mm / 62mm / 6.2mm / 100mm
6.5mm / 62mm / 6.5mm / 100mm
7.0mm / 70mm / 7.0mm / 108mm
7.2mm / 67mm / 7.2mm / 106mm
7.5mm / 70mm / 7.5mm / 108mm
8.0mm / 75mm / 8.0mm / 118mm

10*160mm round handle, ten pieces
CNÂ¥83.70