Diamond Diamond Core Drill Bit – Glass & Tile Drill Bit Set

Johnson Tools Electroplated Diamond Glass & Tile Hole Saw Set | 6-50mm Hollow Core Drill Bits

Executive Summary

In architectural glass installation, luxury bathroom fit-outs, and premium interior renovations, material breakage during the drilling process leads to unacceptable profit losses and project delays. The Johnson Tools 6-50mm Electroplated Diamond Drill Bit Set is explicitly engineered for “zero-chipping” penetration on extremely fragile and high-value surfaces. This comprehensive 15-piece kit provides wholesale hardware distributors and professional contractors with a complete, ready-to-use tooling arsenal for delicate, damage-free coring applications.

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Outside diameter	Shank	Drill depth
6mm	5.4mm	35mm
8mm	6.4mm	30mm
10mm	6.5mm	30mm
12mm	6mm	30mm
14mm	7mm	30mm
16mm	8.2mm	30mm
18mm	8mm	30mm
20mm	8mm	30mm
22mm	9mm	30mm
25mm	9mm	30mm
26mm	9mm	30mm
28mm	9mm	30mm
30mm	9mm	30mm
40mm	9mm	30mm
50mm	9mm	30mm

High-Density Electroplated Diamond Coating
Engineered specifically for brittle materials, these bits feature a premium electroplated diamond coating. This high-density grit adhesion guarantees ultra-sharp, friction-free cutting. It effectively eliminates surface tension during initial engagement, preventing micro-fractures, shattering, or edge spalling on delicate glass and glazed porcelain.

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Thin-Wall Geometry with Slag Clearance Windows
The thin-wall hollow core construction drastically reduces drilling resistance for rapid, effortless penetration. Strategically placed lateral clearance slots act as escape valves for glass slurry and maximize the flow of water coolant. This prevents thermal build-up and protects the diamond matrix from burning out.

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