Bosch Drill Bit HCD2051 SDS Plus Speed Clean 5/16 x 9 Inch Hollow Concrete Masonry (Hollow Extraction Core 4.25 In Usable Adhesive Anchor Boring) Levels Hard-Stamped Size Markings: Deep-stamped socket

Bosch Drill Bit HCD2051 SDS Plus Speed Clean 5 16 x 9 Inch Hollow Concrete Masonry (Hollow Extraction Core 4.25 In Usable Adhesive Anchor Boring) Levels Hard Stamped Size Markings: Deep stamped socket Hard Stamped Size Markings: Deep stamped socket size impressions allow permanent identification in low light environments Outfitted with precision stamped 1 4 inch incremental depth graduations along the jaw faces for fast visual layout alignment Bosch HCD2051 SDS Plus Speed Clean 5 16 Inch x 9 Inch Dust Extraction Drill Bit The Bosch HCD2051 SDS Plus Speed Clean 5 16 Inch x 9 Inch Dust Extraction Bit operates as a hollow concrete masonry drilling tool engineered to evacuate silica dust through the bit body while boring holes for chemical adhesive anchors and mechanical fasteners