Package Dimensions: 1.88 H x 8.3 L x 4.5 W (inches) Head made from hum; its self lubricating properties are ideal for chain drives Package Weight: 2.5 pounds Country of Origin : United States

T-Max linear tensioners have a umhw head that is self-lubricating. The tensioner is designed with oil-impregnated, Sintered Bronze bushings for smooth, reliable movement at all wear points. Bushings are positioned by a press-fit and never need lubrication. The tensioner has Alloy steel, accurately wound compression springs which are used to provide consistent tensioning force. Grease-lubricated to ensure not only quiet operation, but also long life.