O Ring Kit

1) Model No.: NBR 90 GIANT 447Pc Kobelco 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:34 sizes, total 447pcs.
6) MM standard
7) 20 or 24 sets per one carton.