Has a maximum durability in hard concrete. Increased carbide size & optimized tip design. Increased durability while maintaining speed. Increase surface area on carbide tip. Spreads the impact energy across multiple touch points to reduce vibration. Maintain long helix and flute design that allows fast material removal when drilling. Diameter: 12.0 mm Length: 340 mm Working Length: 200 mm Cutters: 4 Pack Qty: 1