• Highlight: MK Diamond MK-290 1" Premium Turbo Rim tile bit for clean, accurate hole drilling in ceramic tile, porcelain, granite, marble, and natural stone.
• Best For: Tile setters, plumbers, and bath-remodel pros drilling 1" fixture holes in finished tile surfaces where chip-out is unacceptable.
• Expert Note: Use a guide jig or low-speed start to prevent walking, and keep the bit cooled with water; the turbo rim sheds slurry faster than continuous-rim bits and drills noticeably cooler in dense porcelain.