Astro Tools 401K3 3-Piece Heavy Duty THOR Air Hammer Bit Set .401 Shank

Astros new proprietary THOR hammer alloy specifically developed for air hammer bits used in the highest power air hammers | Provides a harder surface than competing bits without the usual drawbacks by also delivering high toughness that reduces chips and cracks | Includes 3 .401" shank 1" diameter hammering bits in 4", 7" and 12" lengths