2–6mm HSS CO Cobalt Twist Drill Bits 5 Pieces Assorted Set

2–6mm HSS CO Cobalt Twist Drill Bits 5 Pieces Assorted Set

Important Purchase Reminder

This package only contains twist drill bits; rotary power tool is sold separately and not included.

Product Overview

This 5-piece assorted drill set adopts premium HSS cobalt alloy steel, covering 2mm,3mm,4mm,5mm,6mm five common diameters. Spiral deep chip grooves quickly evacuate metal scraps, heat-hardened cutting tip delivers stable drilling on stainless steel, iron and aluminum sheets. Standard shank fits all 3mm collet rotary grinders, compact small pack ideal for DIY metal crafts, auto repair and small workshop metal machining.

Core Key Advantages

• 5 Mixed Sizes: 2/3/4/5/6mm Meet various thin metal drilling demands.
• HSS Cobalt Alloy Material, wear-resistant for stainless steel cutting.
• Spiral Chip Flute Design, fast chip removal to reduce overheating.
• Heat-Hardened Cutting Point, sharp & long service life.
• Universal shank fits standard 3mm rotary tool collets.
• Portable 5pcs pack for field repair & DIY handmade projects.

Full Technical Specifications

Model SKU	MZ002851
Material	HSS CO Cobalt High Speed Steel
Available Sizes	2mm / 3mm / 4mm / 5mm / 6mm
Pack Quantity	5 Pcs Assorted Bits
Bit Type	Twist Drill Bit
Processable Metals	Stainless Steel, Iron, Aluminum Alloy, Thin Metal Plate
Note	Rotary Tool Not Included

Wide Application Scenarios

• Household DIY metal craft hole drilling
• Auto repair thin metal part processing
• Hardware workshop stainless steel machining
• On-site maintenance handyman supplies
• Small hardware store bulk abrasive stock

Metal Drilling Safety Guidelines

1. Wear safety goggles to block flying metal chips during drilling.
2. Clamp workpiece tightly to avoid sliding at high rotation speed.
3. Add cooling fluid when drilling stainless steel to prevent bit overheat.
4. Do not apply heavy pressure to avoid drill bit fracture.
5. Keep hands far away from rotating drill tip.
6. Store in dry place to prevent surface rust of drill bits.

Package Contents

• 5 × Assorted HSS Cobalt Twist Drill Bits (2/3/4/5/6mm)
• 1 × Multilingual Operation Manual

Frequently Asked Questions

Q1 What metals can these cobalt drill bits drill?

A1 Suitable for stainless steel, iron sheet, aluminum alloy and thin metal plates.

Q2 What sizes are included in this 5pcs set?

A1 Contains 2mm,3mm,4mm,5mm,6mm five common drill diameters.

Q3 What rotary tools can these bits fit?

A1 Fits all rotary grinders equipped with standard 3mm collet.

Q4 Does the package include rotary power drill?

A1 Only drill bits included; rotary tool sold separately.