Core Drill Bit, 4.25" Wet/Dry Diamond Core Drill Bits for Brick and Block, Concrete Core Drill Bit with Pilot Bit Adapter and Saw Blade, 9.5" Drilling

Core Drill Bit, 10.8 cm Wet/Dry Diamond Core Drill Bits for Brick and Block, Concrete Core Drill Bit with Pilot Bit Adapter and Saw Blade, 24.1 cm Drilling Depth, 1.6 cm-11 Inner Thread, Laser Welding Efficient and Durable Materials Laser Welding Dual-Use Wet and Dry Easy Operation Wide Applications Universal Design Wet/Dry Application: Wet or Dry,Net Weight (Including Accessories): 4.9 lbs / 2.2 kg,Maximum Core Depth: 9.5 in / 241.3 mm,Compatible Cutting Materials: Red Brick, Concrete, Foam Brick, etc.,Item Model Number: 107300AA,Compatible Machines: Handheld Drills,Product Dimensions: 11.4 x 4.3 x 4.3 in / 290 x 108 x 108 mm,Diameter: 4.25 in / 108mm,Adapter Specification: Inner Thread 5/8"-11,Welding Method: Laser Welding