The AIYI 19-Piece HSS Twist Drill Bit Set provides a practical selection of drill bits for general drilling, repair and workshop projects. The set includes sizes from 1mm to 10mm in convenient 0.5mm increments, neatly organised in a durable storage case for easy selection and transport.

Key Features

Complete 19-piece drill bit set
Sizes range from 1mm to 10mm
Supplied in 0.5mm increments
Made from high-speed steel (HSS)
Standard twist design for efficient drilling
Clearly marked sizes for quick identification
Organised protective storage case
Suitable for DIY, maintenance and workshop use

Benefits

Provides multiple sizes for different drilling requirements
Reduces the need to purchase drill bits individually
HSS construction offers reliable strength and durability
Storage case keeps the bits organised and protected
Compact design is convenient to carry and store
Suitable for both home users and tradespeople

What’s Included

1 × 1mm HSS twist drill bit
1 × 1.5mm HSS twist drill bit
1 × 2mm HSS twist drill bit
1 × 2.5mm HSS twist drill bit
1 × 3mm HSS twist drill bit
1 × 3.5mm HSS twist drill bit
1 × 4mm HSS twist drill bit
1 × 4.5mm HSS twist drill bit
1 × 5mm HSS twist drill bit
1 × 5.5mm HSS twist drill bit
1 × 6mm HSS twist drill bit
1 × 6.5mm HSS twist drill bit
1 × 7mm HSS twist drill bit
1 × 7.5mm HSS twist drill bit
1 × 8mm HSS twist drill bit
1 × 8.5mm HSS twist drill bit
1 × 9mm HSS twist drill bit
1 × 9.5mm HSS twist drill bit
1 × 10mm HSS twist drill bit
1 × Storage case

How to Use

Select the correct drill bit size and secure it firmly in a compatible drill chuck. Mark the drilling position, hold the drill straight and begin at a controlled speed. Apply suitable cutting lubricant when drilling metal to help reduce heat and extend the bit’s lifespan.

Compatibility / Applications

Suitable for drilling common materials such as metal, wood and plastic when used with the correct drilling speed and technique. Compatible with standard corded and cordless drills fitted with an appropriate chuck.

Care & Maintenance

Clean the drill bits after use and allow them to dry completely before returning them to the case. Apply a light protective oil after drilling metal. Store the set in a dry location and replace any bit that becomes damaged or excessively worn.

Specifications

Brand: AIYI
Product type: HSS twist drill bit set
Item number: Y025-100
Number of pieces: 19
Size range: 1mm–10mm
Size intervals: 0.5mm
Material: High-speed steel
Colour: Gold tone
Storage: Plastic organiser case
Barcode: 6009540251006

Safety Information

Always wear safety glasses and suitable protective equipment while drilling. Secure the workpiece before use and keep hands away from the rotating bit. Disconnect the drill from its power source before changing bits. Do not use bent, cracked or damaged drill bits.

Frequently Asked Questions

How many drill bits are included?
The set contains 19 individual HSS twist drill bits.

What sizes are supplied?
It includes sizes from 1mm to 10mm in 0.5mm increments.

Does the set include a storage case?
Yes, the drill bits come organised in a protective plastic case.

Can these drill bits be used on metal?
Yes, HSS drill bits are suitable for drilling many common metals when used with the correct speed, pressure and cutting lubricant.

Can they also drill wood and plastic?
Yes, they can be used for general drilling in wood and plastic with the appropriate technique.

AIYI 19-Piece HSS Drill Bit Set 1mm–10mm