SALI Wet Diamond Core Drill Bits 4-1/4"/108mm Diameter, 15"/380mm Drilling Depth Concrete Core Drill Bit, 1-1/4-7" Thread Core Bit Turbo Laser-Welded Segments with Rebar, Brick, Block, Masonry, Stone

Features

• Diameter: 4-1/4"/108mm, Inside barrel depth(drilling depth): 15"/380mm,Thread Type: Industry Standard 1-1/4-7"
• Versatile Uses: Our concrete core drill is designed for drilling concrete, red brick, tile masonry，rebar reinforced，asphalt，marble, rock, stone and other materials on conditions, such as installing air conditioners, pipes, stair railings, highways, and airports, etc
• Simple Operation: The core drill can be used wet only . Start drilling at the vertical position and continue to dig deep. water can prolong the service life
• Efficient & Smooth Drilling: This diamond core drill comprises premium aluminum alloy components, and high-quality diamond grits ensure longer coring liferecommended to use with handheld core drills or dedicated core drill rigs
• Humanized Structure: Our diamond wet coring bit features chip removal holes, highly regular sawteeth, and concentric axes design. The innovative design allows it high drilling performance while keeping a long lifetime