Diamond Chamfer Bit Set 38/50mm – Tile & Marble Grinding

Diamond Chamfering Grinding Bit Set – 38mm & 50mm for Porcelain, Marble & Stone

Tackle tile edge work, hole expansion, and surface finishing like a pro with this versatile 4-piece Diamond Chamfering Bit Set. Engineered with vacuum brazed diamond abrasive on a high-carbon steel base, these bits deliver exceptional cutting performance and a longer service life compared to standard electroplated alternatives. Compatible with angle grinders and electric drills, the set is ideal for contractors, tile setters, and DIY enthusiasts working with porcelain tiles, marble, granite, and other natural stone surfaces. Made in Mainland China.

Key Features

• Vacuum Brazed Technology: Advanced bonding process reduces abrasive loss and extends bit lifespan well beyond standard electroplated models.
• Dual Tip Designs: Includes both Classic and Hole-Opening tip types to handle everything from fine edge chamfering to hole expansion.
• Two Diameter Options: 38mm and 50mm outer diameters to accommodate a wide range of stone processing tasks.
• Multi-Function Performance: Performs four operations in one tool — hole expansion, edge trimming, chamfering, and surface finishing/polishing.
• Universal Compatibility: Secure threaded connection rod included for quick installation on most angle grinders and handheld electric drills — minimal slippage even at high RPM.
• Stable Grip: Threaded shank design provides a firm, vibration-minimizing hold during operation.

Specifications

What's in the Box

• 1× Classic 38mm Bit + Connecting Rod
• 1× Classic 50mm Bit + Connecting Rod
• 1× Hole-Opening 38mm Bit + Connecting Rod
• 1× Hole-Opening 50mm Bit + Connecting Rod

Suitable Materials

Porcelain tiles, ceramic tiles, marble, granite, travertine, limestone, and other natural or engineered stone surfaces.

Safety Notice

Always wear appropriate personal protective equipment (PPE) including safety glasses and gloves when operating grinding or drilling tools. Follow all tool manufacturer guidelines for maximum safe operating speed. For general tool safety guidance, visit OSHA – Tools & Equipment Safety.

Note

Actual product color may vary slightly from images due to monitor brightness and lighting conditions. Please allow for minor measurement tolerances.

Frequently Asked Questions

Q: What materials can these diamond chamfer bits be used on?

A: These diamond chamfering grinding bits are designed for use on hard stone and tile surfaces including porcelain, ceramic tiles, marble, granite, travertine, and other natural stone. They are not intended for use on wood or metal.

Q: Are these bits compatible with standard angle grinders?

A: Yes. Each bit comes with a connecting rod that allows for quick, secure installation on most angle grinders and handheld electric drills. The threaded shank ensures a stable, low-vibration connection during high-speed operation.

Q: What is the difference between the Classic and Hole-Opening tip types?

A: The Classic tip is optimized for edge trimming, chamfering, and surface finishing, giving clean, beveled edges on tiles and stone slabs. The Hole-Opening (cone) tip is designed for expanding existing holes — ideal when you need a larger or tapered opening in a tile or stone surface.

Q: Why choose vacuum brazed diamond bits over electroplated ones?

A: Vacuum brazed diamond abrasive creates a stronger mechanical bond between the diamond grit and the steel base compared to electroplating. This results in greater durability, reduced abrasive shedding, and a significantly longer working life, making them more cost-effective over time.