Our Cobalt A++ 9% cobalt alloy drill bits are engineered for maximum strength, heat resistance, and cutting performance. Built for professionals who demand reliability, each bit delivers exceptional drilling power through the toughest materials—including stainless steel, hardened steel, cast iron, aluminium, plastics, and wood.
Made from a premium 9% cobalt alloy, these bits outperform standard HSS and HSS-Co5 alternatives, running cooler, lasting longer, and maintaining sharper cutting edges under extreme conditions.
Available across all sizes: 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 6mm, 7mm, 8mm, 10mm, 12mm, and our multi-size set, these drill bits give you reliable performance for precision pilot holes, fabrication work, engineering tasks, and heavy-duty site use.
Key Features
Cobalt A++ 9% Alloy – superior hardness and heat resistance
Engineered for stainless steel and other hard metals
Cleaner, faster drilling with reduced walking and improved edge retention
Long service life even during continuous use
Precision-ground cutting edges for smooth, accurate holes
Optimised flute design to remove swarf efficiently and prevent clogging
Straight shank for secure fit and minimum vibration
Whether you’re on-site or in the workshop, these cobalt bits provide consistent, professional-grade performance every time.
Box & Packaging Information
Order 5 or more of the same size: Your drill bits come boxed.
Order fewer than 5: Bits are supplied loose, without a box.
