TARGET Super Premium Dri Bits - Maximum Depth 10", Size 4 Inches Super Premium Dri Bits - Maximum Depth 10", Size 4 Inches General Purpose, Masonry: Dri Bits for drilling brick and lightweight block materials. Not recommended for use on cured concrete. Material Being Cut: Brick, Lightweight Block or Concrete Block Total Segment Height: .280, Depth: .220, Base: .060