Spear-point glass and tile bits with 1/4" hex shanks — impact-driver ready for quick-change chucks. Sizes from 3 mm to 10 mm drill clean holes in glass, ceramic tile and porcelain, while the hex shank drops into impact drivers without a chuck key. Factory-direct from a 20-year precision-tools manufacturer with ISO 9001 / 14001 / 45001 triple-system certification.


Execution:
| ΦD (mm) | ΦD (in) | L1 (mm) | HX (mm) |
| 3 | 1/8 | 75 | 6.35 |
| 4 | 5/32 | 75 | 6.35 |
| 5 | 3/16 | 75 | 6.35 |
| 6 | 15/64 | 75 | 6.35 |
| 8 | 5/16 | 85 | 6.35 |
| 10 | 3/8 | 85 | 6.35 |
Produced in an ISO 9001 / 14001 / 45001 triple-certified facility — every bit is inspected before packing.
Start at low speed with light pressure, keep the tip lubricated with water or paste, and never rock the drill.
Hex shanks lock straight into impact drivers and quick-change chucks — no chuck key needed on the job.
Yes — custom branding, packaging and bulk size-assortment programs are available.
Email [email protected] or message us on WhatsApp for wholesale pricing, samples and lead times.
Copyright © 2026 Amsuo Technology Limited. All rights reserved — Privacy Policy