![[UDT] — 521-4246 Heller Bit 4-Flute SDS MAX Bit](https://img.prosourcemro.com/2026/05/3428960-1-2.jpg)
[UDT] — 521-4246 Heller Bit 4-Flute SDS MAX Bit
Family ID: 521-4246
The UDT 521-4246 Heller Bit 4-Flute SDS MAX Bit is a heavy-duty rotary hammer drill bit engineered for fast, efficient penetration into concrete, masonry, and stone, sourced direct from Korea. Four-flute carbide-tipped designs like this are commonly used in demolition and construction applications where rapid debris evacuation and reduced heat buildup are critical for sustained high-volume drilling. Request a quote today for export-ready supply at competitive pricing through a KITA-registered Korean exporter.
23 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| 521-4246 | — | UDT | 12-340 | Spec: 12 | Overall Length: 340 | ||
| 521-4255 | — | UDT | 12-540 | Spec: 12 | Overall Length: 540 | ||
| 521-4264 | — | UDT | 14-340 | Spec: 14 | Overall Length: 340 | ||
| 521-4273 | — | UDT | 14-540 | Spec: 14 | Overall Length: 540 | ||
| 521-4282 | — | UDT | 16-340 | Spec: 16 | Overall Length: 340 | ||
| 521-4291 | — | UDT | 16-540 | Spec: 16 | Overall Length: 540 | ||
| 521-4307 | — | UDT | 18-340 | Spec: 18 | Overall Length: 340 | ||
| 521-4316 | — | UDT | 18-540 | Spec: 18 | Overall Length: 540 | ||
| 521-4325 | — | UDT | 20-320 | Spec: 20 | Overall Length: 320 | ||
| 521-4334 | — | UDT | 20-520 | Spec: 20 | Overall Length: 520 | ||
| 521-4343 | — | UDT | 22-320 | Spec: 22 | Overall Length: 320 | ||
| 521-4352 | — | UDT | 22-520 | Spec: 22 | Overall Length: 520 | ||
| 521-4361 | — | UDT | 24-320 | Spec: 24 | Overall Length: 320 | ||
| 521-4370 | — | UDT | 24-520 | Spec: 24 | Overall Length: 520 | ||
| 521-4389 | — | UDT | 25-320 | Spec: 25 | Overall Length: 320 | ||
| 521-4398 | — | UDT | 25-520 | Spec: 25 | Overall Length: 520 | ||
| 521-4404 | — | UDT | 28-370 | Spec: 28 | Overall Length: 370 | ||
| 521-4413 | — | UDT | 28-570 | Spec: 28 | Overall Length: 570 | ||
| 521-4422 | — | UDT | 30-370 | Spec: 30 | Overall Length: 370 | ||
| 521-4431 | — | UDT | 32-370 | Spec: 32 | Overall Length: 370 | ||
| 521-4440 | — | UDT | 32-570 | Spec: 32 | Overall Length: 570 | ||
| 521-4459 | — | UDT | 35-570 | Spec: 35 | Overall Length: 570 | ||
| 521-4468 | — | UDT | 40-570 | Spec: 40 | Overall Length: 570 |
