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

Label:Yes Material: Steel Quantity: 2Pcs Color: Silver Size: 5.2cmx 2.0cm(2.05''x 0.79'') Item: Bike Chain Tensioners

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