Core through the hardest materials with ease. Nikon Manufacturing presents the latest innovation in core drilling porcelain, dekton, and precious stones. Designed specifically for porcelain materials. However, through testing and innovation we have found that this core bit will perform on any of the hardest natural and engineered stones. Dry drilling on these materials up to 2cm and 3cm Wet. This core bit has out performed its competition in speed, cleanliness, and overall life. Drill faster and cleaner with the strategically places and designed segments.