1.ISO9000, CE, BS1139, EN74 2.Name:Lock pin, Washer plate, Wing nut, Base plate, Insert 3.Type:Pressed, forged 4.HDG, ... you various scaffold accessories, including base plate, screw jack base,wing nut, washer plate, inner joint pin, jack nut, lock pin ... interest in these products, please contact us ASAP.2.Our advantage1: Good quality product. 2. Lower price 3. Best service, experienced technical ...