Drill bit set Abraboro HSS cylindrical 7.2 mm, 10 pcs (AB00010720)

Abraboro HSS cylindrical 7.2 mm drill bit set contains ten identical high-speed steel bits designed for drilling precise holes in metal. Each bit has a 7.2 mm cutting diameter and a cylindrical shank compatible with standard chucks. The set is intended for use in workshops and industrial environments where repeatable, reliable metal drilling is required.

Advantages

Made from high-speed steel, these drill bits offer abrasion resistance and maintain cutting performance at elevated temperatures typical of metalworking. The cylindrical shank provides stable clamping in standard drill chucks and allows quick replacement. Uniform diameter across the set ensures consistent hole size and simplifies tool selection for repetitive tasks.

Suitable for

• Drilling holes in ferrous metals such as steel and iron
• Drilling holes in non-ferrous metals such as aluminum, brass, and copper
• Workshop and industrial drilling operations
• Use in hand drills and drill presses with compatible chucks

Key specifications

• Material: high-speed steel (HSS)
• Cutting diameter: 7.2 mm
• Shank type: cylindrical (round) shank for standard chucks
• Quantity: 10 pieces per set
• Intended material: ferrous and non-ferrous metals

How to use

Select an appropriate cutting speed and apply cutting fluid when drilling metals to reduce heat and extend tool life. Secure the workpiece firmly and clamp the cylindrical shank in a compatible chuck, ensuring concentricity before starting. Begin drilling at low speed to establish the pilot contact, then increase speed as appropriate for the material and bit diameter while applying steady pressure. Periodically withdraw the bit to clear chips and prevent clogging.

Usage recommendations

For best results, use coolant or cutting oil when drilling tougher steels, and adjust drill speed according to material hardness—lower speeds for harder steels, higher speeds for softer non-ferrous metals. Inspect bits regularly for wear and replace when cutting performance declines to maintain hole quality and dimensional accuracy.