Abraboro metal drill bit HSS cylindrical 3.5 mm set 10 pcs (AB44003500)

Abraboro metal drill bit HSS cylindrical 3.5 mm set 10 pcs is a collection of high-speed steel twist drills intended for drilling holes in steel and other common metals. Each bit in the set has a cylindrical shank designed for standard chucks and drill presses. The 3.5 mm diameter is suited to producing accurate, small-diameter holes for maintenance, metalworking, fabrication and general repairs. These HSS drill bits offer durability and cutting performance appropriate for routine workshop and DIY tasks when used with suitable feeds, speeds and appropriate cutting fluid.

Advantages

The Abraboro HSS bits combine hardness and toughness characteristic of high-speed steel to maintain sharp cutting edges under moderate heat. Their cylindrical shanks provide reliable clamping in standard drill chucks and their consistent 3.5 mm diameter ensures reproducible hole sizes across the 10-piece set. The set format is convenient for repeated use or for keeping spares available during projects.

Suitable for

• Drilling holes in mild and medium-strength steels
• Metal fabrication and sheet-metal work
• Maintenance and repair tasks requiring small-diameter holes
• Use with handheld drills and drill presses with compatible chuck sizes

Key specifications

• Material: high-speed steel (HSS)
• Shank type: cylindrical
• Cutting diameter: 3.5 mm
• Quantity: 10 pieces per set
• Intended application: drilling in steel and common metals

How to use

Secure the appropriate Abraboro 3.5 mm bit in the drill chuck ensuring it is centred and tightened. Select a drill speed appropriate for the metal you are working with—lower speeds for harder steels, higher speeds for softer metals—and apply steady feed pressure. Use cutting fluid or coolant when drilling steel to reduce heat buildup and extend bit life. After drilling, clear chips regularly and inspect the bit for wear; replace if the cutting edge becomes blunt or chipped.

Usage recommendations

For best results, pre-centre the hole with a punch on thin or painted surfaces, start drilling at low speed to establish the hole, and use cutting oil when working with carbon steel or alloy steels. Store the bits dry and protected to prevent corrosion and preserve cutting performance.