We offer Spectacle Plate.Item:Wear Plate & Cutting RingMaterial:Hard alloySpecification:DN180, DN200, DN230 etc.Service Life:30, 000m for wear plate;15, 000m for cutting ring.Application:Putzmeister, Schwing, Cifa, Sany, Zommlion etc.A variety of specifications.we can product other specifications to the needs of customer.