Practical Cycling Fixed Gear Bicycle Accessories Bike Chain Tensioner Adjuster Single Speed Track

Label:Yes Item: Bike Chain Tensioners Size: 5.2cmx 2.0cm(2.05''x 0.79'') Material: Steel Quantity: 2Pcs Color: Silver Features: 100% new and high quality This is great because it can prevent chain slack on BMX, children bikes and any single speed bike Used to prevent the rear wheel from slipping forward under pressure For track, BMX, and fixie bikes with rear entry drop outs Package Included: 2Pcs x Chain Tensioners