Bosch 5/8 In. x 12 In. BlueGranite Turbo Carbide Hammer Drill Bit – HCBG21T

Tested up to 5x longer life than standard bitsFaster drilling with four-grind bit head and milled U-flutesDesigned with PowerGrip shank for aggressive bit grip

Benefits
Upgraded build – delivers 5x life and 2x speed over standard masonry bits
PowerGrip round shank
provides better grip for great speed
Bosch-made carbide
delivers outstanding durability under heavy loads
Four-grind head
delivers two more cutting angles for longer life and faster speed
Multi-grind carbide centering tip
offers accurate starts in brick, masonry and more
Robust bit head
provides long life in impact applications
Milled U-flutes with deep-cut spirals
delivers fast dust removal