Drill bit Verto HSS cylindrical for metal 5.5 mm, set of 10 (60H081.)

Set of 10 Verto HSS cylindrical drill bits, diameter 5.5 mm, designed for metalworking operations. Each bit is made from high-speed steel (HSS) to maintain hardness and cutting performance at elevated temperatures, and features a straight cylindrical shank suitable for use in three-jaw chucks, keyed chucks and drill presses. This set is intended for producing clean round holes in steel and other ferrous and non-ferrous metals during fabrication, maintenance and repair tasks.

Advantages

The HSS material provides a balance of toughness and wear resistance necessary for drilling through a range of metal types while resisting heat-related softening. The cylindrical shank ensures reliable clamping in standard chucks and simplifies rapid bit changes. Supplied as a set of ten, the batch format is convenient for workshop stocking and repetitive tasks, reducing downtime for bit replacement.

Suitable for

• Drilling holes in mild steel, stainless steel, aluminium and other common metals
• Fabrication and assembly tasks in workshops and small industrial environments
• Maintenance, repair and overhaul operations requiring repeatable holemaking
• Use with hand drills, drill presses and portable magnetic drills that accept cylindrical shanks

Key specifications

• Material: High-speed steel (HSS)
• Diameter: 5.5 mm
• Shank type: Cylindrical (straight) shank for standard chucks
• Quantity in set: 10 pieces
• Typical applications: Metal drilling, workshop fabrication, maintenance

How to use

Select an appropriate drilling speed and feed for the metal being drilled, secure the workpiece firmly, and clamp the cylindrical shank of the chosen 5.5 mm HSS drill bit in the drill chuck. Apply cutting fluid or lubricant when drilling harder steels to extend tool life and improve chip evacuation. Start at a moderate speed, apply steady pressure, and clear chips periodically to avoid clogging and overheating. Replace worn or chipped bits to maintain hole quality and operator safety.

Usage recommendations

For best results, use cutting fluid on stainless steel and other hard alloys, and reduce speed when drilling into hardened materials. Inspect bits before use for blunt edges or damage, and store the set in a dry place to prevent corrosion.