4pcs Wet Dry Core Drill Bits M22 Thread 2.2-4.7 Inch For Concrete Block Stone
USD 53.99 USD
Specifications
| Brand | Unbranded |
| Color | Green |
| Material | 5# Steel |
| Surface Treatment | High-frequency Welding |
| Cutting Method | Dry/Wet |
| Blade Teeth | Turbo Tooth |
Good Compatibility: With standard thread M22 and hexagonal fittings, it is easy to work with different handheld water drilling rigs and benchtop water drilling rigs. Thread: M22. Powerful Function: With a maximum opening depth of about 13" and 12.20", this product has been tested to penetrate a concrete block with a thickness of 8.66" and four 14mm rebars inside in about 4 minutes and can drill 40 holes.