2.5" Dia Sorbothane No-Stain Hemisphere Bumper Non-skid Feet 50 Duro with Adhesive - 4 Pack Safe on All Surfaces - Will Not Cause Discoloration Durometer: 50 (Shore OO) Supports between 45 lb and 60 lbs per pad Absorbs Upto 94.7% of Vibration Easy to Install - 3M Peel and Stick Adhesive Commercial Grade Anti-Vibration Pad