DEWALT DT9578-QZ EXTREME SDS-Plus 2-Cutter Drill Bit is a professional-grade masonry drill bit designed for fast and efficient drilling in concrete, masonry, stone and brick/block work. It features a durable 2-cutter carbide head for improved penetration, long service life and reliable drilling performance. 
The hardened steel body and optimized SDS-Plus shank provide strong power transmission and durability. Its optimized flute design helps remove drilling dust efficiently, while the Tough Core and Iron Blast Technology are designed to reduce breakage and increase durability. 

Key Features

• Genuine DEWALT DT9578-QZ
• 16 mm diameter
• 160 mm overall length
• SDS-Plus shank
• 2-cutter carbide head
• EXTREME 2 design
• Tough Core for enhanced durability
• Optimized flute for efficient dust removal
• Suitable for concrete, masonry, stone and brick/block
• Suitable for plug, anchor and clearance holes
• 1 piece per pack