4 Rubber Vibration Isolator Mounts (1" Diameter x 3/4 Ht) 5/16"-18 x 5/8" Length Stud These mounts measure 3/4" in thickness (rubber height) and 1" in diameter (rubber diameter) Stud is 5/8" Long with 5/16"-18 Male and Female thread. Package Includes: 4 Isolation rubber mounts Provides excellent noise and vibration reduction. Can be used on/in: Water pumps Construction Automobile Electronic components Medical equipment Home appliance Mechanical equipment Office facilities Aviation Air compressors Diesel engines Gasoline engines Industrial Machines and may more applications