Abraboro metal drill bit HSS cylindrical 4.5 mm set of 10 (AB00010450)

Abraboro HSS cylindrical drill bits, 4.5 mm diameter, sold as a set of 10 pieces. These high-speed steel bits are designed for drilling in mild steels and non-ferrous metals. The straight cylindrical shank fits standard three-jaw chucks and handheld drills, making the set suitable for general workshop tasks, maintenance, and precision metalworking where consistent diameter and straightness are required.

Advantages

The high-speed steel (HSS) construction provides a balance of hardness and toughness for cutting metal while maintaining edge retention under moderate heat. The uniform 4.5 mm diameter across the set ensures repeatable hole sizes for production or repair work. Straight cylindrical shanks allow reliable clamping in common drill chucks and simple handling during sequential drilling operations. Supplied as a set of 10, the pack reduces downtime due to wear or breakage and supports multiple operators or prolonged tasks.

Suitable for

• Drilling holes in mild steel and non-ferrous metals (aluminium, brass, copper)
• Workshop maintenance and repair tasks
• Precision metalworking where a consistent 4.5 mm hole is required
• Handheld drilling and drill-press operations using standard chucks

Key specifications

• Material: high-speed steel (HSS)
• Tip style: conventional twist drill geometry for metal
• Diameter: 4.5 mm
• Shank type: straight cylindrical shank
• Pack quantity: 10 pieces

How to use

Select an appropriate cutting speed and feed for the workpiece material and secure the drill bit in the drill chuck so that the bit is clamped straight. For mild steel and thicker sections, use cutting fluid to reduce heat and extend tool life. Align the drill with the marked position, start at low speed to create a pilot groove if needed, then increase speed and apply steady pressure until the hole is complete. After drilling, clear chips from the hole and inspect the bit for wear or chipping before further use.

Usage recommendations

For best results when drilling metals: use an appropriate coolant or cutting oil, maintain correct spindle speed and feed rate for 4.5 mm HSS drills, and replace bits from the set when signs of dulling or chipping appear to avoid oversized holes or workpiece damage.