2Pcs Bicycle Chain Tensioner Aluminum Alloy Adjustable Bicycle Chain Tensioner Fastener for Single Speed Bicycle BMX Fixie Bike

About this item Great Material: Made of high grade aluminum alloy material, resistant to wear and long-lasting in use. Application: Suitable for 3/8″ (10mm) axles, universally for single speed mountain bikes, road bikes, BMX and folding bike. Easy to install: No other complicated tools are needed. Light weight and easy to install. Function: With upgraded CNC process, this single speed chain tensioner is perfect replacement for old or damaged chain tensioner. Bright Color: The surface is anodized with bright colour and glossy shine, making your bike cooler and more fashionable.