Drill bit Abraboro HSS cylindrical 11 mm set of 5 (AB00011100)

Abraboro HSS cylindrical 11 mm drill bit set contains five high-speed steel bits designed for drilling accurate 11 mm holes in metal and general workshop materials. The cylindrical shank ensures stable clamping in standard chucks of hand drills and drill presses. Built for fabrication, maintenance and routine metalworking tasks, these bits deliver the cutting performance and durability typical of HSS tooling for straightforward, repeatable holemaking.

Advantages

The HSS material provides good hardness and heat resistance for drilling into mild steel, wrought iron and similar metals. Cylindrical shanks allow secure seating in chucks and simple use without needing special adapters. Supplied as a set of five, the package offers quick replacements when bits get worn or for use across multiple workstations. The consistent 11 mm diameter aids in producing uniform holes for fastening, dowelling or assembly tasks.

Suitable for

• Drilling 11 mm holes in mild steel and general metalwork
• Maintenance and repair tasks in workshops and industrial settings
• Use in hand drills and drill presses for fabrication
• Preparing holes for bolts, rivets and dowels in metal components

Key specifications

• Material: High-speed steel (HSS)
• Shank type: Cylindrical shank compatible with standard chucks
• Diameter: 11 mm
• Quantity: Set of 5 drill bits
• Intended use: Metal drilling and general workshop applications

How to use

Select an appropriate cutting speed and coolant or lubricant based on the workpiece material; lower speeds and use of cutting oil are recommended for harder steels. Secure the workpiece firmly and clamp the drill bit in the chuck, ensuring correct alignment. Start drilling with a pilot mark or centre punch if precise positioning is required, apply steady pressure and let the bit cut without forcing. Periodically withdraw the bit to clear chips and maintain cooling; replace worn bits from the set as needed to maintain hole quality.

Usage recommendations

For best results on metal, use cutting oil and moderate drill speeds to extend bit life. Inspect bits regularly for wear or chipping and replace individual bits from the set when performance degrades. Use proper clamping and eye protection when operating hand drills or drill presses.