DDS856/021 (TWOoth Series): round-end taper diamonds — axial reduction with a radiused tip that keeps margins smooth. TWOoth Series in bulk — the same TWOoth diamond, packed 100 per box for high-volume bench work.
SPEC: Shape: Round End Taper (DDS856/021) · Head: 2.1 mm · Tip: 1.7 mm · Head length: 8 mm · Shank: FG (1.6 mm friction-grip) · Pack: 100 burs.
AVAILABLE GRITS: SC — select at add-to-cart.
OPERATING SPEC — FG & FGSS SHANK. Recommended operating speed is set by head diameter. Apply the diamond to the surface only after reaching operating speed.
| HEAD DIAMETER (mm) | RECOMMENDED SPEED (rpm) |
|---|---|
| 0.6–1.0 | 75,000–150,000 rpm |
| 1.2–1.4 | 60,000–110,000 rpm |
| 1.5–1.8 | 45,000–88,000 rpm |
| 2.0–2.3 | 40,000–75,000 rpm ◄ this head size |
| 2.4–2.7 | 30,000–65,000 rpm |
| 2.9–3.1 | 25,000–56,000 rpm |
| 3.2–4.0 | 22,000–45,000 rpm |
| 4.2–5.2 | 20,000–37,000 rpm |
Recommended contact pressure: 0.3–2 N — let the diamond do the work. Water spray is essential: minimum 50 ml/min; heads over 2 mm with working lengths over 21 mm require additional cooling.
GRIT CODE — ONE CODE, ONE COLOR, ACROSS THE FULL DENTPS DIAMOND LINE. The color squares on the product image and in this legend share the same coding.
NEO cross-reference: TWOoth Series diamonds cross-reference to the NEO carbide equivalents — see the NEO line for the carbide option in the same shape and size.
TWOoth is a DentPS™ brand designation. TWOoth Series products are independent DentPS value lines.
SAME FAMILY — DDS856/021 ACROSS LINES. Same head, same grit system, different shank or line:
D856/021 — standard FG shank
GD856/021 — Gold series FG
Item DDS856/021.
