8 pieces hole saw set

This set contains vacuum-brazed diamond hole saws, professional-grade tools designed for making clean, precise circular cuts in extremely hard and abrasive materials. 

Primary Uses

• Hard Tiles: Ideal for porcelain, ceramic, and bathroom wall or floor tiles.
• Natural Stone: Used for drilling through granite, marble, slate, limestone, and masonry.
• Specialty Materials: Can also be used on glass, fiberglass, brick, and pottery.
• Installation Tasks: Commonly used for plumbing and electrical fixtures, such as faucet holes, shower valves, and waste pipes. 

Key Technical Details

• Technology: They use vacuum brazing, a process that bonds industrial diamond particles directly to the steel core in an oxygen-free environment. This creates a stronger bond and allows for faster, more aggressive cutting compared to standard bits.
• Tool Compatibility: Most of these bits feature an M14 thread, meaning they attach directly to an angle grinder for high-speed operation (up to 11,000 RPM). They can also be used with standard electric drills if you have an M14 adapter.
• Wet vs. Dry Use: While many are rated for dry use, using water as a coolant is highly recommended to prolong tool life, keep the surface cool, and reduce dust. 

Size Guide & Applications

The sizes in your set are standard for various home renovation needs:

• 20mm & 25mm: Perfect for small copper pipes or electrical cabling.
• 32mm, 35mm, & 40mm: Standard for most faucet fittings and shower arms.
• 45mm, 50mm, & 68mm: Used for larger waste pipes, drain outlets, and electrical junction boxes.