100mm Wall Hole Drill Bit

The Diamond Burr Set – 30 Pcs Rotary Drill Bits is a versatile toolkit for hobbyists, craftsmen, jewelers, and professionals working on precision projects. These burrs handle grinding, carving, engraving, polishing, and etching on a wide range of materials such as glass, ceramics, crystal, metals, gems, carbide, brick, stone, and wood.

Each burr has a 2.9–3mm universal shank, making it compatible with most rotary tools, drills, and grinders. With 30 assorted shapes, this set provides the right bit for fine detailing, intricate designs, and professional-quality finishes. The medium grit (120–150) diamond coating removes material effectively while giving smooth control on delicate tasks.

The burrs come in a durable plastic storage case, keeping them organized and ready for quick access. Strong diamond-coated tips ensure long-lasting performance even with regular use.

Whether you’re engraving glass patterns, sharpening tools, polishing jewelry, or smoothing ceramics, this burr set delivers precision and durability. Compact and easy to carry, it’s a valuable addition to any workshop or studio.

Features:

• 100mm carbide-tipped wall hole saw drill bit

• Made of durable alloy with high-frequency welding for hardness & wear resistance

• High-speed steel center drill ensures accurate positioning

• Heat-treated connecting rod for stability & long-lasting use

• Suitable for concrete, brick, stone, cement & wall drilling

• Efficient waste removal design for cleaner operation

• Compatible with electric hammer drills & percussion drills

Specifications:

• Bit Diameter: 100 mm

• Material: Carbide-tipped alloy, High-speed steel center drill

• Shank Type: Round shank

• Process: High-frequency welding, Heat-treated rod

• Applications: Wall drilling, air conditioner installation, pipe & cable holes, masonry work

• Compatibility: Electric hammer drills, Percussion drills