Metal body construction with Single-Lip rubber seal. Fits Dexter 10" x 1-1/2" Hubs / Drums. Used with 1-1/4" ID wheel bearings (LM67048). Grease seals should be inspected frequently and replaced if they show signs of wear such as excess grease build up on the inside of wheel hub or trailer rim. Hub grease seals help prevent water and dirt from entering the hubs providing protection against bearing failure. Dimension of Seal 1.781" ID 2.33" OD (Sleeve of 20)