Synergy Suspension 3620-07-18-10 Double Adjuster Tube Adapter - 7/8-18 Left Hand Thread, 1inid Tube The Synergy Double Adjuster Tube Adapter is designed to eliminate the need for jam nuts that are normally used when building link suspension & steering systems The use of the Double Adjuster allows the suspension/steering link to be adjusted without removal The Double Adjuster allows the user to fine-tune the suspension/steering geometry by loosening the pinch bolt and turning the adjuster sleeve Ideal for link suspension designs with weld on bushings/joints at one end or bent suspension links An integrated drain hole lets any water that enters the threads of the adapter drain out