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

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