Metal Drilling Safety & Product Disclaimer Notice

1. Safety Warning: Wear protective safety goggles during metal drilling to avoid metal chip injury; fix workpiece firmly before drilling operation. 2. Disclaimer: This HSS-Co drill bit set is universal aftermarket machining accessory, not original part of any rotary tool brand.

Product Overview

5-piece mixed size cobalt high speed steel twist drill kit, including 2mm, 3mm, 4mm, 5mm, 6mm five common diameters. Adopts 135° split point tip design for fast self-centering without slipping during drilling. HSS-Co cobalt alloy material delivers outstanding wear resistance, works perfectly on stainless steel, iron, aluminum, copper and hardwood materials. Standard straight shank fits most general handheld rotary power tools for daily workshop DIY machining.

Core Key Advantages

• 5 mixed common sizes: 2/3/4/5/6mm to meet multi-scene drilling demands
• 135° split point tip for accurate positioning, no sliding on metal surface
• HSS-Co cobalt alloy, ultra wear-resistant for hard stainless steel drilling
• Dual chip flute design for fast chip removal, smooth drilling process
• Standard straight shank, compatible with most general rotary power tools
• Hardened cutting edge, long service life for workshop daily use

Full Technical Specifications

Material	HSS-Co Cobalt High Speed Steel
Available Sizes	2mm / 3mm / 4mm / 5mm / 6mm
Drill Point Angle	135° Self-centering Split Point
Flute Structure	Double Chip Removal Groove
Application	Stainless Steel, Iron, Aluminum, Copper, Wood

Universal Compatibility Description

These straight shank cobalt drill bits fit most standard general handheld rotary power tools for household and workshop drilling work.

Operation Guidelines

1. Clamp workpiece tightly to prevent shifting before drilling.
2. Install matched drill bit and lock chuck firmly.
3. Wear safety goggles and apply moderate pressure during drilling.
4. Clean drill bits and store dry after use.

Package Contents

• 1 Set × 5Pcs Cobalt HSS-Co Drill Bits (2/3/4/5/6mm)
• Multilingual Drilling Safety Instruction Card

Frequently Asked Questions

Q1 What sizes are included in this drill bit set?

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

Q2 What material are these drill bits made of?

A1 Made of HSS-Co cobalt high speed steel with high wear resistance.

Q3 Can this drill bit drill stainless steel?

A1 Yes, cobalt alloy material is specially suitable for stainless steel machining.

Q4 Is this drill bit original tool brand accessory?

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