4in Diamond Drilling Bit with Positioning Drill Wet Dry Coring Bit for Concrete Wall Hole Opening

Feature: 1. Multiple Usages: This diamond bit can be used for dry drilling and wet drilling, and can be used to drill concrete, red brick, marble and other materials. 2. Universal Thread: Featuring 58?11 universal thread, this drill bit can be easily and quickly assembled into a standard fixed coring or handheld drill press. 3. Excellent Material: This diamond core drill bit is made of excellent alloy steel with high hardness, and diamond abrasive grains to ensure longer core life. 4. Reasonable Design: This diamond hole opener features chip hole, highly regular saw teeth and concentric axes to ensure efficient and fast hole opening. 5. Easy Operation: Start drilling from a vertical position and then drill deeper, easy and labor saving, widely used in air conditioning installation, pipe drilling, etc. Specification: Item Type: Diamond Drilling Bit Material: Alloy Steel, Diamond Opening Diameter: Approx. 102mm 4in Overall Length: Approx. 240mm 9.4in. Package List: 1 x Diamond Bit 1 x Positioning Bit1 x Hex Wrench1 x Saw Blade1 x Gasket Note: Manual measurement, the actual size shall prevail.Multiple Usages: This diamond bit can be used for dry drilling and wet drilling, and can be used to drill concrete, red brick, marble and other materials. Universal Thread: Featuring 58?11 universal thread, this drill bit can be easily and quickly assembled into a standard fixed coring or handheld drill press. Excellent Material: This diamond core drill bit is made of excellent alloy steel with high hardness, and diamond abrasive grains to ensure longer core life. Reasonable Design: This diamond hole opener features chip hole, highly regular saw teeth and concentric axes to ensure efficient and fast hole opening. Easy Operation: Start drilling from a vertical position and then drill deeper, easy and labor saving, widely used in air conditioning installation, pipe drilling, etc.