Isolate It!: Sorbothane Vibration Isolation Bushing 30 Duro (.28" ID - .72" OD - .22" Thick) - 12 Pack Reduce Vibration in Sensitive Equipment High Performance Sorobthane Ultra-Soft Polyurethane Absorbs Upto 94.7% of Vibration Use individually or as a pair to form a bushing Rated Load per bushing in LBS.: 3-8