Drill Core Bit Montolit FTJ12 12 mm for Gres/Tiles, model KILLER

The Montolit FTJ12 12 mm core drill bit KILLER is designed for drilling precise holes in gres and ceramic tiles. Built to work with hand drills and drill rigs suitable for tile work, this drill bit enables accurate core penetrations in hard glazed porcelain and similar materials. It is intended for professional installers and DIY users who require reliable performance when making openings for anchors, pipes or cable passages in tiled surfaces.

Advantages

The FTJ12 features a 12 mm diameter optimized for small-diameter core holes in dense tile materials, offering straight, round cuts and minimal chipping on glazed surfaces. Its geometry and construction provide consistent drilling behaviour when used at appropriate speeds and pressures, helping to achieve clean results in hard porcelain gres and glazed ceramic tiles. The bit is compatible with both portable drills and drill rigs that accept core bits of this size.

Suitable for

• Creating anchor or fixing holes in ceramic or porcelain tiles
• Drilling passage openings for small pipes and cables through tiled walls and floors
• Tile penetration work during bathroom, kitchen and utility installations
• On-site adjustments by installers and precise DIY tile modifications

Key specifications

• Cutting diameter: 12 mm
• Material compatibility: gres (porcelain stoneware) and glazed ceramic tiles
• Intended use: core drilling small-diameter holes
• Suitable drilling equipment: hand drills and drill rigs designed for tile drilling
• Typical applications: anchors, pipes, cable passages in tiled surfaces

How to use

Mark the drilling position on the tile surface and, where possible, protect surrounding tiles and fixtures. Use a drill with appropriate speed control and, if applicable, a drill rig or guide to keep the bit perpendicular to the surface. Begin drilling at low speed with light pressure to establish the hole and reduce the risk of slipping or chipping. Apply steady, controlled pressure and moderate speed while allowing the bit to cut without excessive force. For hard porcelain gres, periodic cooling with water can reduce heat and extend bit life; follow the drill manufacturer’s recommendations for wet or dry operation. After completing the cut, carefully remove debris and inspect the hole edges for cleanliness before installing anchors or passing pipes and cables.

Usage recommendations

Use protective eyewear and gloves during drilling. When working with glazed or brittle tiles, consider using a drill guide or suction block to stabilize the bit. For best results in hard porcelain, use water cooling if your equipment allows it and avoid excessive axial force to prevent cracking.