High Speed Steel Twist Drill Bit Set
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Premium Material Options: Available in M35 (Cobalt), 6542#, 4341#, and 4241# grades. (Quality: M35 > 6542# > 4341# > 4241#)
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Heavy Duty Design: Engineered for durability across all drilling applications.
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Precision Tip: Innovative tip design for precision starts and highly accurate holes.
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Rapid Chip Removal: Special helix design ensures fast clearance of waste material.
13PCS Set: 1.5, 2, 2.5, 3, 3.2, 3.5, 4, 4.5, 4.8, 5, 5.5, 6, 6.5mm
19PCS Set: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10mm
25PCS Set: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13mm
Frequently Asked Questions
🔹 Which HSS material grade should I choose?
The quality hierarchy is M35 > 6542# > 4341# > 4241#. M35 (Cobalt) is best for harder metals like stainless steel, while 4241# is suitable for softer metals, wood, and plastics.
🔹 What materials can these bits drill through?
These twist drill bits are versatile and can be used for iron, copper, aluminum, wood, and various types of plastic.
🔹 Are these compatible with my hand drill?
Yes, they are compatible with CNC Engraving Machines, CNC Machining Centers, Drill Presses, and standard Hand Drills.
🔹 What makes the "special helix" design beneficial?
The special helix design is engineered for rapid chip removal, preventing clogging and ensuring cooler, faster drilling.
🔹 Does the set come with a storage case?
Yes, depending on your selection, the bits come in either a high-quality Plastic (PC) or Iron box for organized storage and protection.
🔹 What sizes are included in the 25-piece set?
The 25-piece set provides a comprehensive range from 1mm to 13mm, in increments of 0.5mm.
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