... for use with banjo bolts and rings 1.Washer Type: Copper washer,aluminium washer,O-ring,Twin rings,heat ... bolts and rings.2.Materials: Copper, Aluminium, AIMg3, AIMgSi1, Steel, Armco, Spring Steel (Ck67,Ck75, 51CrV4, etc.), 15 Mo3 (16Mo3), 13CrMo44, ... Inconel, Silver, Bronze, Lead, Zinc3.Features & Service: Finely Processed; Various Styles; Excellent Quality and Reasonable Price Please contact us for ...