Those carbide masonry drill bits are used to drill into brick, concrete, stone, cement block and granite. For best results those bits must be used with an SDS hammer drill. The alloy drill bits are made of 40Cr hardness heat treated steel and YG8C cemented carbide. The drill bits are durable and able to handle high temperatures. Those bits are SDS plus shank that is compatible with an older standard SDS 10mm slotted drilled chucks and new SDS plus chucks. 

Features:

• Carbide-tipped bit heads are harder, tougher and more resistant and durable to extreme loads
• Those bits designed for longer tool life and faster performance in masonry
• 4-flute optimized design for fast debris removal without dust explosion during drilling
• The 4-cutter construction ensures excellent performance without jamming in rebar
• Compatible with most standard SDS and SDS-Plus rotary hammer drills

Specifications:

• Model: 9PC-SDS-PL 
• Material: Tungsten carbide, alloy steel
• Heat treated
• Bit body hardness:  40 Cr
• YG8C cemented carbide tips
• Total length: 6-1/4in or 160mm 
• Size: 5mm, 6mm, 6mm, 8mm, 8mm, 10mm, 12mm, 14mm, 16mm
• Size: 13/64inch, 1/4inch, 1/4inch, 5/16inch,5/16inch,3/8inch, 1/2inch, 9/16inch, 3/5inch
• Includes plastic storage container
• Weight: 21.7oz or 616g

Package Included: 

• 9pcs SDS Plus hammer drill bit set  
• Plastic storage case