4 Rubber Vibration Isolator Mounts (1-1/2 Dia x 3/4" Ht) 5/16-18 x 5/8 Length Studs These mounts measure 3/4" in thickness (rubber height) and 1-1/2" in diameter (rubber diameter) Studs is 5/8" Long with 5/16"-18 Male and Male 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