Drilling Safety & Product Disclaimer Notice

1. Safety Warning: Wear protective goggles during metal drilling; clamp workpiece firmly to avoid sliding injury from metal scraps.
2. Disclaimer: This cobalt drill bit set is aftermarket machining accessory, not original component of any rotary power tool brand.

Product Overview

This kit includes 5 common size HSS-Co cobalt twist drill bits (2mm, 3mm, 4mm, 5mm, 6mm). Adopts double chip flute structure for fast chip removal, high-hardness cobalt alloy delivers excellent wear resistance, perfectly processes stainless steel, iron, aluminum, copper and hardwood. Standard straight shank matches most general handheld rotary drills for workshop DIY and maintenance work.

Core Key Advantages

• 5 mixed common sizes cover daily metal drilling demands
• HSS-Co cobalt material, sharp cutting edge for hard stainless steel
• Dual flute design accelerates chip evacuation without blockage
• Standard straight shank fits most universal rotary tools
• High hardness, long service life for frequent workshop use

Full Technical Specifications

Universal Compatibility Description

These straight shank cobalt drill bits fit most ordinary handheld rotary power tools for household maintenance and small workshop machining tasks.

Operation Steps

1. Fix workpiece tightly on bench before drilling operation.
2. Install corresponding drill bit and lock drill chuck completely.
3. Wear safety goggles and apply steady moderate pressure while drilling.
4. Clean drill bits and store dry after finishing work.

Package Contents

• 1 Set × 5Pcs HSS-Co Cobalt Twist Drill Bits (2~6mm)
• Multilingual Drilling Safety Instruction Card

Frequently Asked Questions

Q1 What drill sizes are contained in this set?

A1 It contains 2mm, 3mm, 4mm, 5mm and 6mm five common drill diameters.

Q2 Can these bits drill stainless steel plates?

A1 Yes, HSS-Co cobalt alloy material is specially made for stainless steel drilling.

Q3 What tools do these drill bits match?

A1 Compatible with most standard straight shank handheld rotary drills.

Q4 Is this original brand power tool accessory?

A1 This universal aftermarket drill set, not factory original tool part.