T.M. Designworks Chain Sliders are made from their custom formula of plastic that is infused with oils and finished with a TPE coating that greatly reduces friction and chain drag. T.M. Designworks says it "wears like steel and is slick like oil" in order to give you minimal chain noise while promoting proper chain tension and helping deliver smooth power to the rear wheel. Each slider is precisely fit to your machine and is anchored using aluminum or bronze holding collars and high-strength 5mm bolts.