Isolate It!: Sorbothane Male Vibration Stud Bumper Mount - 1/4-20 - 1" (H) - 1 1/2" (Dia) 70 Duro - 4 Pack Superior grade anti-vibration mount Made with high quality fasteners and Sorbothane visco-elastic polymer Very low creep rate compared to silcone, rubber, neoprene, etc. Absorbs shock for millions of cycles without the need for metal springs to return material to equilibrium Durometer: 70 (Shore OO) Load Rating: 18-27 lbs per mount