VEVOR Punta per Trapano a Nucleo, Diametro 3 Pollici, Profondità di Foratura 9-1/2 Pollici, 5/8-11 Interna
Manufacturer VEVOR. This diamond core drill bit is easy to use. First, insert the pilot drill into the adapter, ensuring the drill's angle matches the adapter bolt hole. Tighten the screws securely.