ZHIWEI 38mm Diamond Coated Ceramic Hole Saw Drill Bit - ZW38MM

The ZHIWEI 38mm Diamond Coated Hole Saw is engineered for clean, precise drilling through hard and delicate materials, including glass, ceramic tiles, vitrified tiles, and marble. Featuring a high-grit diamond cutting edge, this drill bit minimizes chipping and ensures smooth operation. To achieve optimal starting accuracy without a pilot bit, begin drilling at an oblique 45-degree angle to locate the groove before bringing the drill vertical.