... O ring kit assortment Material: NBR Spec: 30 sizes, total 382 pcs, JIS B 2401 standard 1. NBR rubber O ring ... of box : red, blue, yellow, green5) Spec: 30 sizes, total 382 pcs, JIS B 2401 standardCatalohue Details : Model No. O ring ... of box red, blue, yellow, green Spec 30 sizes, total 382 pcs, JIS B 2401 standard2. We have below O ring ...