1) Model No.: NBR 90 GIANT 383Pc Hitachi o ring kit.
2) Material : NBR(FKM, EPDM, MVQ,Silicone available).
3) Color of o-ring : black or customized color.
4) Color of box : transparent, blue, yellow,red,green or customized color.
5) Spec: 36 sizes, total 383Pcs.
6) MM standard.
7) 20 or 24 sets per one carton.