Bosch CYL-9 Ceramic Tile and Glass Drill Bit, 12 x 90 mm, White

The Bosch CYL-9 Ceramic Tile & Glass Drill Bit is a single accessory designed for finishing work on delicate interior surfaces. It is rated only for drilling straight holes into soft ceramic wall tiles and unhardened glass. A centring tip helps start the hole accurately and keeps the bit from wandering across a smooth glaze. The cutting geometry requires plain rotary action, so the hammer setting on the drill must be switched off completely to avoid breaking the workpiece. Running at low speed without impact keeps fragile materials intact during fitting.

This bit fits straight into a standard corded or cordless drill. The cylindrical shank goes directly into conventional chucks, with no adapter needed. The white finish sets it apart from ordinary masonry bits in a cluttered toolbox. Used carefully at reduced speed, the tip cuts cleanly without chipping the edges. As a one-piece product, it offers a straightforward solution for installation work where standard twist bits would split the material.

• 12 mm drilling diameter produces correctly sized holes for standard bathroom and kitchen wall fittings.
• 90 mm overall length gives enough reach to penetrate thick tiles and adhesive bedding.
• 8 mm cylindrical shank fits directly into standard keyed and keyless drill chucks.
• Hard metal construction resists wear from abrasive ceramic glazes at low speeds.
• Zero-impact operation (hammer drilling disabled) prevents stress fractures in unhardened glass panels.