Fenner Drives® premium PowerTwist® link v-belt is a long-lasting, permanent upgrade for v-belt drives. Easy fit-and-forget installation doesn't require you to dismantle the drive, and there's no need to re-tension. And it offers reduced drive vibration. The belt assembles to any length so you need not stock multiple belt sizes. Its composite polyurethane/polyester material provides superior resistance to oil, water, and chemicals.