Diamond Hole Saw GRAPHITE 28 mm with M14 shank, model TOP-55H308

Diamond Hole Saw GRAPHITE 28 mm with M14 shank, model TOP-55H308 is a purpose-built cutting accessory for creating precise round openings in hard surfaces. The tool features a 28 mm cutting diameter and an M14 threaded shank that fits most angle grinders and rotary tools with M14 fittings. It is engineered for use on ceramic, porcelain, glazed tiles, glass, and natural or engineered stone, providing consistent results for installation and repair tasks in plumbing, tiling, electrical work and general renovation.

Advantages

The diamond-segment cutting edge ensures fast, clean drilling while maintaining long service life on abrasive and brittle materials. The M14 shank offers secure attachment to compatible grinders and reduces wobble during operation for better hole accuracy. Its compact 28 mm diameter is suitable for common penetrations such as pipes, wiring sleeves, and anchors. The construction balances cutting speed and durability, minimizing the need for frequent replacements during typical trade use.

Suitable for

• Drilling holes in ceramic and porcelain tiles
• Creating openings in glass and glazed surfaces
• Cutting through natural stone and engineered stone countertops
• Plumbing and sanitary fixture installations
• Electrical outlet and conduit penetrations in tiled surfaces

Key specifications

• Cutting diameter: 28 mm
• Shank type: M14 threaded shank for angle grinders and compatible rotary tools
• Cutting material: diamond segments for abrasive and brittle materials
• Primary applications: ceramic, porcelain, tiles, glass, natural and engineered stone
• Typical tool compatibility: angle grinders and rotary tools accepting M14 fittings

How to use

Mount the hole saw onto an angle grinder or rotary tool with an M14 fitting, ensuring the shank is tightened securely. Mark the center point of the hole on the workpiece. Begin drilling at low speed to establish the initial positioning and then apply moderate, steady pressure. Use periodic back-and-forth motion and, where appropriate for the material, cool the cutting area with water to reduce dust and overheating; avoid excessive force to prevent cracking on brittle surfaces. After completing the cut, withdraw the hole saw carefully and clean the cutting segments of debris before storage.

Usage recommendations

For best results on tiles and glass, use water cooling and operate at controlled speed. Wear appropriate personal protective equipment including eye protection, gloves and a dust mask. Match the tool speed and pressure to the material hardness and thickness to extend cutting life and achieve a clean edge.