Cylindrical Vibration Isolator, Female Threads Top End, Male Threads, Bottom End, Max. Load Downward Compression (Lb.) 80, Max. Load Sideways Shear (Lb.) 15, Cylinder Dia. 1-3/8 In., Height 1 In., Thread Length 5/8 In., Rubber, Thread Size 5/16-18, Metric Thread Size -, Compression Mounting, Clear Zinc Plated, Grade 5 Screws, Resistant To Abrasion, Standards -, Includes -