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

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