Ṣaaju ṣiṣe ibeere, jọwọ pese alaye wọnyi ki a le mọ awọn iwulo gidi rẹ ni kedere:
1.Iwọn
2.Size ifarada
3.Magnetic grade(35-N52(M,H,SH,UH,EH,AH))
4.Coating (Zn, Ni, Epoxy, bbl)
5.Magnetic aaye itọnisọna (Axial, Radial, Sisanra, ati be be lo)
6.Opoiye
7.Nibo tabi bawo ni iwọ yoo ṣe lo oofa naa