NEO TOOLS Corona diamantata 72 mm x M14 (55-316)

When standard hole saws struggle with hard, brittle materials, the NEO TOOLS 55-316 diamond core drill bit steps in. Its 72 mm diameter and M14 thread turn an angle grinder into a precise cutting tool for ceramics, porcelain stoneware, granite, marble, natural stone, and even glass. The diamond-coated edge stays sharp through repeated dry or wet drilling, making it a reliable choice for both professional tilers and ambitious DIYers.

Highlights

• 72 mm drilling diameter for large holes in tiles and stone
• M14 thread fits standard angle grinders
• Diamond-coated cutting edge for long life and clean cuts
• 10 mm diamond layer height and 35 mm maximum drilling depth
• Supports both dry and wet drilling (air or water cooling)
• High-grade steel body withstands up to 12000 RPM
• Silver/grey finish resists corrosion and wear

In daily use

Mount the bit on your angle grinder, mark the centre, and start drilling at a moderate speed. For dry drilling, pause periodically to let the bit cool; for wet drilling, use a water feed or spray bottle to reduce dust and heat. The threaded connection ensures a secure fit, while the diamond coating grinds through even the hardest porcelain without chipping the surface. The 35 mm depth is ideal for most wall and floor tiles, and the 10 mm diamond layer means you can sharpen or recondition the bit for extended service.

Full specifications

• Product type: Diamond core drill bit
• Drilling diameter: 72 mm
• Mounting thread: M14
• Tool compatibility: Angle grinder
• Drilling application: Dry and wet drilling
• Recommended materials: Ceramic tiles, porcelain stoneware, granite, marble, natural stone, glass
• Cutting edge type: Diamond-coated
• Diamond layer height: 10 mm
• Maximum drilling depth: 35 mm
• Body material: High-grade steel
• Maximum RPM: 12000 RPM
• Cooling method: Air (dry drilling), water (wet drilling)
• Connection type: Threaded
• Colour: Silver/grey

Final note

For clean, chip-free holes in the toughest materials, the NEO TOOLS 55-316 is the professional's choice.