Drill Bit Abraboro HSS cylindrical 7.8 mm set of 10 (AB00010781)

Abraboro HSS cylindrical drill bits, 7.8 mm diameter, set of 10 pieces are made from high-speed steel suitable for general metalworking and workshop applications. These drill bits feature a straight cylindrical shank designed for use in standard chucks and are intended for creating through and clearance holes in steel, iron and similar ferrous materials. The set of ten identical 7.8 mm bits provides consistent hole size and quick replacement during repetitive tasks or maintenance work.

Advantages

Manufactured from high-speed steel (HSS) for improved hardness and heat resistance during drilling operations, these bits offer reliable cutting performance on metal. The cylindrical shank ensures compatibility with a wide range of handheld and bench-mounted chucks. Supplied as a set of 10, the assortment reduces downtime caused by dulling or breakage and supports continuous workflow in fabrication and repair jobs.

Suitable for

• Drilling through holes and clearance holes in steel and iron
• Workshop maintenance and general fabrication
• Use with handheld drills and bench drills fitted with standard chucks

Key specifications

• Material: High-speed steel (HSS)
• Diameter: 7.8 mm
• Shank type: Cylindrical (straight) shank for standard chucks
• Pack quantity: 10 identical drill bits
• Intended materials: Steel, iron and similar ferrous metals

How to use

Select an appropriate clamp or chuck that securely holds a 7.8 mm cylindrical shank and install the bit with the cutting tip facing away from the tool. For metal drilling, mark the drilling point and, when possible, use a center punch to reduce wandering. Start at low speed to establish the hole, then increase speed appropriate to the material and bit size while applying steady, moderate feed pressure. Use cutting lubricant or coolant to reduce heat and extend bit life, and withdraw occasionally to clear chips from the hole. Replace bits from the set when wear or cutting performance declines.

Usage recommendations

Use cutting fluid for drilling ferrous metals, secure workpieces with clamps or a vise, and wear suitable eye and hand protection. Match drilling speeds to the material and bit diameter to avoid overheating; keep spare bits from the set available to maintain productivity.