1. Materiaal: X46Cr13 / 4Cr13 (rêstfrij stiel), 20MnCr5 / 20CrMnTi (legering stiel) oanpast
2. hurdens: HRC54-60.
3. Diameter: 1.0mm oant 28mm; Outer diameter: oant 1800mm.
Wy kinne ferskate ringdies oanpasse foar in protte merken, lykas CPM, ZHENGCHANG, FAMSUN, BUHLER, YEMMAK, BAHOO, YULONNG, IDAH, CPP, OGM.