Drill bit Abraboro HSS cylindrical 11 mm, set of 5 (AB00011101)

Abraboro HSS cylindrical 11 mm drill bits are supplied as a set of five cutting tools designed for reliable holemaking in metals and other hard materials. Each bit is made from high-speed steel (HSS) to preserve cutting edge hardness and wear resistance at typical workshop drilling speeds. The cylindrical shank fits standard three-jaw chucks and provides consistent concentricity for machining and maintenance tasks. This set offers identical geometry across all five pieces for repeatable performance and easier tool replacement.

Advantages

High-speed steel construction ensures durability and heat resistance when drilling through steel and similar materials. The standard cylindrical shank enables use in most bench and portable drills without the need for special adapters. Consistent flute geometry and precise tip grinding provide reliable chip evacuation and cleaner hole finishes. Supplied as a set of five, these bits reduce downtime by providing ready replacements and simplify inventory for routine workshop or maintenance operations.

Suitable for

• Drilling through mild and medium carbon steel
• Workshop and maintenance drilling tasks
• Drilling in cast iron and some non-ferrous metals
• General-purpose metalworking and fabrication
• Use in hand-held drills and drill presses with standard chucks

Key specifications

• Material: High-speed steel (HSS)
• Cutting diameter: 11 mm
• Shank type: Cylindrical (suitable for standard chucks)
• Quantity: Set of 5 identical drill bits
• Flute type: Spiral flutes for chip removal

How to use

Select an appropriate cutting speed and feed for the material being drilled, secure the workpiece, and mount the 11 mm HSS bit in a properly tightened chuck. Use cutting fluid or lubricant when drilling ferrous metals to reduce heat and improve tool life. Begin drilling at low speed to establish the hole, then apply steady pressure while allowing the drill to do the cutting. Retract periodically to clear chips if drilling deep holes and replace worn bits from the set as needed to maintain hole quality.

Usage recommendations

For best results when drilling steel, use a light to moderate cutting oil and select drill speeds appropriate to the material grade; reduce speed for harder alloys. Keep the drill bit sharp and replace from the set when you notice increased thrust force or poor surface finish. Use a center punch to prevent walking when starting holes on flat surfaces.