Zhonghuan SDS-Max 28 mm 2-Cutter I7 Drill Bit Drilling Gray granite
Continuous footage of the Zhonghuan SDS-Max 28 mm 2-Cutter I7 Drill Bit drilling Gray granite. Watch penetration, tracking and debris clearance from the I7 cutting geometry.
Recorded test information
- Product
- Zhonghuan SDS-Max 28 mm 2-Cutter I7 Drill Bit
- Internal code
- DP1-I7
- Diameter / shank
- 28 mm / SDS-Max
- Head design
- Geometrically profiled 2-cutter carbide head with centering tip
- Substrate
- Gray granite
- File date / duration
- 2026-07-11 / 1:00
These records show how the featured geometry drills granite. Send your target substrate, diameter and working depth and we will arrange a sample evaluation for your project.
I7 against our earlier flat 2-cutter head
Measured in our own development testing against Zhonghuan's earlier flat 2-cutter head, same hammer and same stone.
Continuous in-cut footage
The uninterrupted in-cut view follows the Zhonghuan SDS-Max 28 mm 2-Cutter I7 Drill Bit through continuous dry hammer drilling in a gray granite block. Centering, straight tracking and dust movement around the flutes can be reviewed throughout the working sequence.
Evaluate this SDS-Max geometry
Review the full SDS-Max range or request samples for a controlled test under your own hammer, substrate, and hole-depth requirements.