These mounts measure 3/4" in thickness (rubber height) and 1-3/8" in diameter (rubber diameter) Studs are 5/8" Long with 3/8"-16 Thread. Package Includes: 4 Isolation rubber mounts Provides excellent noise and vibration reduction while maintaining stability and quiet operation. Can be used on/in: Water Pumps, Garage Door Motors, HVAC systems, Small Engines and beyond. These mounts provide reliable isolation to protect your machinery and minimize disturbance. The durable rubber construction not only absorbs vibration but also adds an extra layer of shock protection, prolonging the lifespan of your appliances.