Drill bit set Abraboro HSS cylindrical for metal 6.8 mm 10 pcs AB00010680

Abraboro HSS cylindrical drill bit set for metal, 6.8 mm diameter, 10 pieces, is designed for drilling consistent holes in steel and other ferrous and non-ferrous metals. The set contains ten identical high-speed steel bits with a straight cylindrical shank suitable for standard three-jaw chucks and bench drills. These bits are intended for workshop, maintenance and light to medium metalworking tasks that require repeated 6.8 mm holes with reliable cutting performance.

Advantages

High-speed steel construction provides balanced hardness and toughness for drilling metal while maintaining edge retention under typical workshop speeds. The cylindrical shank ensures compatibility with common drill chucks and simple bit changes. Supplied as a 10-piece set, the collection supports multiple operations or replacements without interrupting work. Uniform diameter across the set enables consistent hole sizes and simplifies inventory management for repetitive tasks.

Suitable for

• Drilling 6.8 mm holes in steel, aluminum and other metals
• General workshop and maintenance drilling tasks
• Bench drill, hand drill and drill press applications with three-jaw chucks
• Production runs or repair work requiring multiple identical bits

Key specifications

• Material: high-speed steel (HSS)
• Shank type: cylindrical (straight) shank for standard chucks
• Nominal diameter: 6.8 mm
• Quantity: 10 pieces per set
• Intended material: suitable for steel and other metals

How to use

Select an appropriate drill speed and feed for the metal being drilled and secure the workpiece. Install a 6.8 mm cylindrical HSS bit in the drill chuck and tighten the jaws to eliminate slippage. Use cutting lubricant where recommended for harder steels to reduce heat and extend bit life. Apply steady pressure, clear chips periodically, and allow the bit to cool between successive holes if drilling many repetitions.

Usage recommendations

For best results, match drill speed and lubrication to the type of metal: lower speeds and cutting fluid for hardened steels, medium speeds for mild steel and higher speeds for non-ferrous metals. Store bits dry and protected to avoid corrosion and check cutting edges before use, replacing worn bits to maintain hole quality and safety.