Qinwuwu Wall Hole Saw Drill Impingement Electric Hammer Joint Rod Through Wall Drill Pipe Drilling And Reaming Of Concrete Cement Air Conditioning Pipe (Hole opener 30mm)

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About Qinwuwu Wall Hole Saw Drill Impingement Electric

Material: Alloy material, high-quality hard and wear-resistant alloy drill bit gives you a good experience in the drilling process Hole opener specification 30mm, processing depth 43mm, total length 70mm, net weight 5.47oz Hole opener specifications 35mm, processing depth 47mm, total length 70mm, net weight 7.41oz Hole opener specification 40mm, processing depth 49mm, total length 70mm, net weight 9.88oz Hole opener specification 60mm, processing depth 49mm, total length 70mm, net weight 16.58oz Hole opener specification 70mm, processing depth 49mm, total length 70mm, net weight 21.16oz Note: 1. Check the integrity of the hole opener before use. The hole opener needs to be clamped when it is installed in the electric drill. 2. When drilling holes, the hole opener needs to be perpendicular to the workpiece 3. Use a smaller feed force when starting drilling, and use a little force after positioning 4. During drilling operation, the speed should not be too low to avoid jamming of the blade and chipping 5. After the center drill drills through the workpiece, the force should not be too large to avoid severe impact 6. Coolant should be added during the opening process to prevent damage caused by excessive temperature 7. When opening holes, wear protective gloves, glasses, masks, etc., pay attention to safety