• Best For: Stone and tile installers who need a 5/8 inch hole, one step up from the 1/2 inch MK-190.
• Highlight: A 5/8 inch MK-190 wet core bit; the next size down in the range is 1/2 inch and the next size up is 3/4 inch.
• Expert Note: A wider bit removes more material per hole than the smaller MK-190 sizes, so feed water continuously and let the diamond edge do the cutting.