Stone Coring Bits

We offer a variety of stone coring bits for wet or dry drilling of granite, marble and similar types of stone. The 5/8" thread allows the stone coring bit to be used with a hex adaptor or on a variable speed angle grinder. These are top quality diamond stone coring bits with zero vibration, so you can drill precise holes without the need for a template. Our Ultra supreme diamond stone bits have a diamond coating on the side of the barrel for faster penetration speeds and the ability to open the hole to a larger diameter.