Products Description
Achieve professional-grade drainage installations with the A04B03 Vacuum Brazed Drain Drilling Bit. Specifically engineered for sink and floor drain applications, this innovative tool combines drilling and countersinking into one seamless step. Utilizing advanced vacuum brazing technology with a 45# grit diamond concentration, it offers rapid material removal and an exceptionally long service life when working with tough natural stones and ceramics.

Dual-Action Design: Specifically shaped to drill the main hole and create the perfect countersink recess for drains in one pass.
Vacuum Brazed Technology: High-quality 45# grit diamonds are brazed to the core for aggressive cutting and superior durability in hard materials.
Dry Use Optimized: Engineered for high-speed Dry Use, making it ideal for on-site fabrication without the need for water cooling systems.
10mm Segment Height: Equipped with a robust 10mm diamond segment at the base to ensure deep cutting capacity and extended tool life.
Universal Fit: Compatible with standard Angle Grinders using M14 or 5/8"-11 thread connections.

| Feature | Specifications |
| Model Number | A04B03 Series |
| Diameter Range | 40-60mm / 45-65mm / 50-70mm |
| Segment Height | 10mm |
| Diamond Grit | 45# |
| Connecting Thread | M14, 5/8"-11 (Supports M12, 1/2" Gas) |
| Working Condition | Dry Use |
| Applicable Machine | Angle Grinder |
| Grinding Materials | Porcelain, Tile, Ceramic, Marble, Granite |
Sink Drain Installation: Creating the recessed area for kitchen and bathroom sink flanges in granite and marble countertops.
Floor Drain Fabrication: Precision drilling for shower floor drains in heavy-duty porcelain or natural stone tiles.
Custom Stonework: Any application requiring a clean, beveled hole for recessed hardware or fixtures.
MOQ: 20 pcs
Lead Time: 15–25 days after payment
Payment: T/T, PayPal, L/C
OEM: Custom logo/packaging available

















