extended shank HSS twist Drill Bit

• Surface Finish: white,amber,black Finish
• Manufacturing art:fully ground
• Size(mm): 14mm-30.0mm,
• extended shank Length:400mm,600mm,800mm
• Shank: straight shank

Technical Data

• Diameter: 1–12mm; extended shank length 100–300mm (total length 150–400mm, varies by diameter).
• Material & Process: HSS M2/M35 (5% cobalt); fully ground; 135° split point; straight shank; H8 tolerance.
• Others: Right-hand spiral flutes; bright/black oxide finish; optimized flute design for deep drilling.

Advantages

• Reaches deep holes (≥100mm) without extra extensions, ideal for thick workpieces.
• Cobalt-enhanced (M35) or high-grade HSS (M2) resists heat/wear during prolonged drilling.
• Self-centering 135° point avoids slipping; smooth chip removal via optimized flutes.
• Compatible with rotary drills/drill presses; suits steel, stainless steel, aluminum for industrial/DIY deep-hole tasks.