5 Pcs Stitch Pivot Round Hinge for RC Airplane Aircraft Description: Item: Pivot & Round Hinges Dimension: (D for Diameter, L for Lenth, Optional)A:D4.5L67mm B:D2.5L48mm C:D2.5L43mm D:D2.0L33mm Quatity:5 Pcs Usage: For RC Airplane Package Included:5 x Pivot & Round Hinges