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

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