Diamond Tile Drill Bits for Porcelain & Ceramic

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Diamond drill bits for tiles and porcelain, plus carbide bits for small fixing holes: clean holes in porcelain, ceramic, granite, marble and slate without cracking the tile. The range covers dry-drilling bits for cordless drills and angle grinders, wet-drilling bits for the hardest vitrified porcelain, and sizes from 4mm fixing holes to 130mm waste outlets.

Choose by shank first: M14 bits fit an angle grinder and drill fastest, hex and round-shank bits fit a standard drill. Then pick the size; drill guides and cooling gel are in the Tile Drilling Accessories collection.

Related: tile drilling accessories, roof tile drill bits and glass drill bits.

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drill with guide​ Tile Drill Guide for Diamond Tile Drill Bits - Stops the Bit Wandering on Glazed Tiles

    Tile Drill Guide for Diamond Tile Drill Bits - Stops the Bit Wandering on Glazed Tiles

    Steel Drill Guide for all Marcrist PG750X and PG350X porcelain diamond dry drill bits and hole saws. The Marcrist steel tile drill guide is a reliable solution for achieving flawless and accurate holes in tiles, porcelain, and granite. Built strong, it stays steady while...
    £14.46
    £14.46

    Choosing the Perfect Tile Drill Bit

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    Buying guide

    Best drill bit for porcelain tiles: choose by hole size

    Hole size Typical job Bit to use Fits
    4-8mm Wall plugs for rails, mirrors and brackets Carbide tile drill bits, or the diamond-tipped CD850 (5-8mm) and TD850 (6-12mm), all dry Corded or cordless drill
    5-14mm Fixings in hard vitrified porcelain, granite and stone PG750X hex (5-72mm) or PG350X hex (6-14mm), both dry Cordless drill, hex shank
    14-44mm Pipes, taps and shower valves PG750X-M14 or PG850X-M14, both dry Angle grinder, M14
    58-130mm Waste outlets, soil pipes and extractor ducts PG750X-M14 (up to 130mm) or PG850X-M14 (up to 82mm) Angle grinder, M14
    6-130mm Wet drilling in porcelain, granite and marble PG850 (6-130mm, 1/2in UNF) with a water swivel, or PG350 (6-75mm, hex) Drill with water

    Diamond tile hole saws for pipes and waste outlets

    For round holes from 20mm to 130mm through porcelain and ceramic, use a large-diameter diamond tile drill bit rather than a hole saw made for wood or metal. The PG750X-M14 drills dry on an angle grinder up to 130mm, the PG850X-M14 up to 82mm, and the PG850 drills wet up to 130mm. For mains power and a steady start, the TDM1 tile drilling machine takes PG750X bits up to 112mm with its hydraulic drill guide. A tile drill guide stops the bit wandering on a glazed surface.

    More about this range

    Shop the ultimate selection of diamond tile drill bits tailored for precision, durability, and clean performance. Whether you're working with ceramic tiles, porcelain stoneware, glass tiles, or mosaic surfaces, our diamond-coated drill bits are engineered to tackle the toughest materials with ease and efficiency.

    Our collection includes a full spectrum of sizes, ranging from 4mm to 130mm, giving you the flexibility to drill everything from small mounting holes to large socket cutouts. Choose from a variety of shaft types M14, HEX, and round shank-to ensure compatibility with your angle grinder, power drill, or rotary tool.

    Not sure which bit you need? Read our step-by-step guide to drilling porcelain tiles without cracking them.

    Built for both wet and dry drilling, each bit features a premium-grade steel body with a vacuum-brazed diamond segment that guarantees longer life, faster cutting speed, and chip-free results. These bits are ideal for tradespeople, contractors, and DIY enthusiasts who demand precision and performance on every job.

    We also offer tile drill bit sets, making it easy to handle multiple tasks with one convenient kit-perfect for tiling bathrooms, kitchens, and flooring installations. Complete the setup with tile drilling accessories and guide jigs, and see also our glass drill bits, roof tile drill bits and multi-purpose masonry drill bits.

    Whether you're cutting into soft ceramic or dense porcelain, trust our diamond drill bits to deliver clean, smooth holes with minimal effort. Fitting a full bathroom or kitchen? Browse the complete tiler tool range and our tile cutting blades.

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