The ZENESIS™ Z‐THIN WALL CORE BIT makes the cleanest holes in the largest variety of materials. The unique continuous thin rim is extremely precise and fast. They are great for marble, granite, engineered stone, porcelain and sintered stone. This bit has far less chipping on the top and less blow out on the bottom when compared to standard core bits.
| Part No. | Diameter | Segment | Arbor Size |
| ZETWCB30P019B | 3/4" | 9.5mm | 5/8"–11 |
| ZETWCB30P025B | 1" | 9.5mm | 5/8"–11 |
| ZETWCB30P028B | 1 1/8" | 9.5mm | 5/8"–11 |
| ZETWCB30P032B | 1 1/4" | 9.5mm | 5/8"–11 |
| ZETWCB30P035B | 1 3/8" | 9.5mm | 5/8"–11 |
| ZETWCB30P038B | 1 1/2" | 9.5mm | 5/8"–11 |
| ZETWCB30P044B | 1 3/4" | 9.5mm | 5/8"–11 |
| ZETWCB30P051B | 2" | 9.5mm | 5/8"–11 |
| ZETWCB30P060B | 2 3/8" | 9.5mm | 5/8"–11 |
| ZETWCB30P067B | 2 5/8" | 9.5mm | 5/8"–11 |
| ZETWCB30P075B | 3" | 9.5mm | 5/8"–11 |
| ZETWCB30P100B | 4" | 9.5mm | 5/8"–11 |
| ZETWCB30P120B | 4 3/4" | 9.5mm | 5/8"–11 |