Item Name: Single Speed Track Bike Chain Tensioner Adjuster Bicycle Accessories Fixed Gear. Size: 5.2cmx 2.0cm(2.05''x 0.79'')Quantity: 2PcsColor: SilverItem: Bike Chain TensionersMaterial: SteelFeatures:100% new and high qualityThis is great because it can prevent chain slack on BMX, children bikes and any single speed bikeUsed to prevent the rear wheel from slipping forward under pressureFor track, BMX, and fixie bikes with rear entry drop outsPackage Included: 2Pcs x Chain Tensioners *
