This kit is composed of two fork oil seals with the exterior part in rubber , a single-sealing lip, and a bulging dust seal lip. ... The quality of Athena fork oil and dust seals is superior compared to OEMs, guaranteeing excellent, smooth performance, sealing at high temperatures, and great resistance to abrasion. Specifications: Item Type : Falling Protection Brand Name : Item Weight : 0.06kg Item Width : 4.5inch Model Name: 45x57x11 45*57*11 / 45 57 11 OIL SEAL Item Length : 5.7inch Material Type : Rubber Item Height: 1.1inch Origin : China(mainland) Oil Seal Size : 45x57x11 45*57*11 Spring: double springs Dust seal : 45x57 (45*57)