Diamond Products 04793 3-1/2-Inch Heavy Duty Orange Dry Vacuum Bits - Premium Diamond Drill Bits for Concrete, Tile & Masonry - Perfect for Construction, Renovation & DIY Projects

From the Manufacturer Diamond products 04793 3 1/2-Inch heavy duty Orange dry vacuum bits allow the operator to drill holes with minimum dust due to the vacuum attachment while offering long life. It drills holes into cured concrete and brick, but should not be used in applications with steel heavier than wire mesh. This bit has a drilling depth of 9-Inch.

Cured concrete and brick

9-Inches of drilling depth

1.250-Inches to 12 threaded hub

Must use dry vacuum swivel

Not for use in applications with steel heavier than wire mesh