Drill bit set Bosch METALBOR HSS-G long 3.2 x 66 x 100 mm, 5 pcs

Bosch METALBOR HSS-G long drill bit set, size 3.2 x 66 x 100 mm, 5 pieces, is a set of straight-shank high-speed steel bits intended for drilling metal and general-purpose workshop tasks. The HSS-G material and long flute geometry allow drilling into steel, non-alloyed metals and similar materials while providing deeper reach than standard-length bits. These 3.2 mm diameter bits have a total length of 100 mm and an effective working length of 66 mm, making them suitable for both hand drills and drill presses where longer penetration is required without sacrificing rigidity.

Advantages

The HSS-G construction offers durability and heat resistance for frequent metal drilling. Long flute design provides extended reach for deeper holes and access to recessed areas. Straight shank ensures compatibility with standard chucks and easy bit changes. The set of five identical bits allows for replacement or multiple tools to be prepared in parallel, reducing downtime during workshop, maintenance or fabrication work.

Suitable for

• Drilling through steel and non-alloyed metals
• Workshop and maintenance tasks with hand drills
• Use on drill presses for deeper holes
• Fabrication tasks requiring precise small-diameter holes
• Reaching recessed or hard-to-access drilling points

Key specifications

• Material: high-speed steel (HSS-G)
• Diameter: 3.2 mm
• Working length (flute): 66 mm
• Total length: 100 mm
• Shank type: straight shank (suitable for standard chucks)
• Pack quantity: 5 pieces

How to use

Select the appropriate drill speed and apply cutting fluid when drilling metal to reduce heat and improve tool life. Secure the workpiece firmly and align the drill bit perpendicular to the surface before starting. Begin at a low speed to establish the center and then increase speed as appropriate for material and machine. Use steady, moderate feed pressure to avoid bit breakage, particularly with the 3.2 mm diameter. After drilling, clear chips from the flute and inspect the bit for wear; replace with another from the set if performance diminishes.

Usage recommendations

For best results when drilling steel, use a lubricant or cutting oil and operate at recommended speeds for HSS bits. For small diameters like 3.2 mm, avoid excessive side load and rapid feed to minimize risk of breakage. Store bits in a dry place and keep them organized to preserve cutting edges and ensure safe handling.