Pro Tuning - 100pk COLOR Shoulder Sleeve Washers for Tension RodSW100 color Sleeved Washers, the cheapest thing you can do for an instant upgrade to any of your drums. These plastic washers and collars slip over the tension rods to eliminate 100% metal on metal contact, but because of the design that slides into the lug housing (as opposed to just having a flat plastic washer), they do a better job providing tuning stability. If you like to tune your heads on the low side, these will make a noticeable improvement