• Highlight: The MK Diamond Zenesis 4-inch core bit uses patterned-diamond technology to place each diamond exactly where it does the most work, drilling cleanly through cured concrete and medium-to-heavy rebar where standard core bits glaze, stall or chip a segment.
• Best For: Concrete coring crews on cured slabs with embedded rebar, plumbing and electrical rough-in coring through structural floors and walls, anchor and dowel-bar installation in heavily reinforced concrete.
• Expert Note: Zenesis core bits are rated for wet drilling only; running them dry on cured concrete will glaze the segments within a few inches of cut and end the life of the bit fast, so plumb the water feed and verify steady flow before starting any pull.
