This sealing ring has good heat resistance and oil resistance, it also has great sealing performance and wear resistance.It can offer high durability and stable performance even in the harshest environments.Made of high quality plastic and resin material, it is a fine workmanship.The inner diameter is 2.86cm-3.4cm, thread diameter is 3.85cm-4.3cm.It is suitable for mountain bike, motorcycle, home, outdoor and hardware store.Item Name: Front Fork Seal RingMaterial: Plastic,ResinFeatures: Compact, Lightweight, Wear ResistantSize Details: Inner Diameter: 28.6mm - 34mm/1.13" - 1.34" (Approx.)Thread Diameter: 38.5mm - 43mm/1.52" - 1.69" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Front Fork Seal Ring