Dongsin Absolute Finger Bit - Ø20 , L40 Tw - ½"Gas
The Dongsin Absolute Finger Bit 1/2" Gas with No Bottom Segment is a precision CNC diamond tool designed for plunge routing, finger joint cutting, and interior profiling operations on granite, marble, quartzite, and engineered stone countertops. Dongsin is a leading Korean manufacturer of CNC diamond tooling for the stone industry, and the Absolute series represents their highest-performance finger bit line engineered for demanding production environments. The No Bottom Segment configuration means the cutting diamonds are distributed along the sides of the bit only, without a bottom cutting su
Always wear appropriate PPE. Follow local safety regulations when using power tools or chemical products.
- Secure the bit using the correct adapter for your drill.
- Mark the position and start at low RPM to establish the hole.
- Apply steady, even pressure — do not force the bit.
- Use water for wet drilling to cool the bit and extend life.
- Always wear appropriate PPE.
- Granite
- Marble
- Quartz
- Engineered Stone
Always wear appropriate PPE (ANSI Z87 eye protection, hearing protection, and respiratory protection per the operation). Follow tool RPM ratings and local safety regulations.