AvantiPRO Tile Drill Bit Set PMAGT1050-S4 4 Piece Glass Stone (Carbide Rapid Start Tip 3 Flat Shank Rotary Driver Ceramic Granite Boring Cutters)
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AvantiPRO PMAGT1050-S4 4-Piece Carbide-Tipped Glass, Tile, and Stone Drill Bit Set
The AvantiPRO PMAGT1050-S4 4-Piece Glass and Tile Drill Bit Set bores clean, chip-free anchor and plumbing pilot holes through glazed ceramic tile, porcelain slabs, granite countertops, natural stone backsplashes, and non-tempered decorative glass panels. Engineered with high-precision Rapid Start spearhead tips, these multi-material bits eliminate tool wandering and skating across slick vitreous surfaces to protect expensive wall finishes. Featuring industrial-grade brazed carbide cutting edges, 3-flat non-slip shanks to prevent chuck spinning under load, and sizing from 1/8 inch to 5/16 inch, this rotary-only cutter set equips tile contractors, plumbers, and glaziers with smooth, crack-free drilling performance.
Best Used For:
- Ceramic & Porcelain Bathroom Fixture Mounting: Boring clean 1/8-inch to 5/16-inch anchor clearance holes for towel bars, grab handles, and shower enclosures without fracturing glazed surfaces.
- Granite & Natural Stone Backsplash Drilling: Sinking precision mounting holes into solid marble, granite, slate, and travertine without edge chipping.
- Architectural Glass & Mirror Fastening: Penetrating flat decorative glass panels and mirrors smoothly using steady, variable-speed rotary drill drivers.
Key Performance & Safety Features
- Rapid Start Centering Geometry: Precision-ground spearhead tip bites instantly into smooth surfaces to prevent bit wandering and surface marring.
- Industrial Brazed Carbide Cutting Edges: Heat-resistant carbide tips withstand severe friction and retain sharpness through dense natural stone and masonry.
- 3-Flat Non-Slip Shank Architecture: Machined flats lock securely into standard 3-jaw drill chucks to eliminate spinning and maximize torque transfer.
- Rotary-Only Drive Optimization: Designed specifically for variable-speed rotary drills to preserve brittle tile and glass substrates from hammer percussion fractures.
- Versatile 4-Piece Diameter Range: Provides essential 1/8-inch, 3/16-inch, 1/4-inch, and 5/16-inch bits for standard drywall and masonry wall anchors.
What's Included
- (1) 1/8-Inch (0.125") Carbide-Tipped Glass and Tile Drill Bit
- (1) 3/16-Inch (0.1875") Carbide-Tipped Glass and Tile Drill Bit
- (1) 1/4-Inch (0.250") Carbide-Tipped Glass and Tile Drill Bit
- (1) 5/16-Inch (0.3125") Carbide-Tipped Glass and Tile Drill Bit
Technical Specifications
| Specification | Detail |
|---|---|
| Model Number / Part ID | PMAGT1050-S4 (Tile & Glass Bit Set) |
| Total Set Piece Count | 4 Pieces |
| Minimum Bit Diameter Size | 0.125 in (1/8 in / 3.18 mm) |
| Maximum Bit Diameter Size | 0.3125 in (5/16 in / 7.94 mm) |
| Intermediate Bit Diameter Sizes | 0.1875 in (3/16 in), 0.250 in (1/4 in) |
| Shank Interface Geometry | 3-Flat Straight Shank (Anti-Spin Design) |
| Cutting Tip Technology | Precision Brazed Rapid Start Carbide Spearhead |
| Bit Body Core Material | Hardened Alloy Tool Steel with Polished Finish |
| Operating Action Mode | Rotary Drilling Only (Do Not Use Hammer Mode) |
| Drill Chuck Platform Compatibility | Corded & Cordless Variable-Speed Drill Drivers |
| Target Application Materials | Ceramic Tile, Porcelain, Granite, Natural Stone, Glass |
Pro-Tip: Build a small dam with plumber's putty around your hole layout mark and fill it with water before drilling; keeping the carbide spearhead immersed in water during low-RPM rotary boring dissipates frictional heat and prevents localized thermal cracking in fragile tile and glass.