Pro Tuning - 100pk WHITE Shoulder Sleeve Washers for Tension RodSW100 White Sometimes you see something so simple that you just go, Duh And so it was when we discovered 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