Drill bit Abraboro HSS-R 2.1 mm x 49 mm cutting length / 24 mm overall length

Abraboro HSS-R twist drill with a 2.1 mm diameter and a 49 mm cutting length (24 mm overall length) is designed for drilling steel and other metals. Made from high-speed steel (HSS-R), this drill bit offers consistent cutting performance and wear resistance suitable for general metalworking, maintenance and repair tasks. It is compatible with hand drills and drill presses that accept straight-shank bits of this size and provides precise, clean holes when used with appropriate speed and coolant.

Advantages

The HSS-R material provides reliable hardness and toughness for drilling mild and alloy steels, stainless steels in light-duty applications, and non-ferrous metals. The 49 mm cutting length allows deeper penetration compared with standard short bits while the 2.1 mm diameter supports fine, accurate hole-making. Its straight shank fits standard chucks and offers straightforward mounting in portable drills and bench machines. Designed for general workshop use, the bit balances cutting speed, edge life and dimensional accuracy.

Suitable for

• Drilling holes in mild steel, alloy steel and non-ferrous metals
• Maintenance and repair work on metal components
• Fabrication and light engineering tasks requiring small-diameter holes
• Use with hand drills and drill presses that accept straight-shank HSS bits

Key specifications

• Material: High-speed steel (HSS-R)
• Diameter: 2.1 mm
• Cutting length: 49 mm
• Overall length: 24 mm
• Shank type: Straight shank suitable for standard chucks
• Recommended application: Metal drilling (steel, alloys, non-ferrous metals)

How to use

Select an appropriate rotational speed for a 2.1 mm HSS bit and clamp the workpiece securely. Mount the straight shank in the drill chuck and ensure concentric alignment. For steel and harder alloys, use cutting fluid or coolant to reduce heat and prolong tool life. Apply steady, moderate feed pressure without excessive side-loading; withdraw the bit periodically from deep holes to clear chips. After drilling, deburr the hole as required for the application.

Usage recommendations

To achieve best results, use lubricants for steel drilling, start with a center punch on smooth surfaces, and choose drill speeds and feeds appropriate to material hardness. Store the bit in a protective case to prevent edge damage.