Features: Keep Your Chain Tight: This set of chain tensioners is designed to ensure your Razor MX500/MX650 chain stays tight during use, improving performance- and reducing wear. Durable Materials: Made from a combination of rubber and metal, these tensioners are built- to last and withstand the rigors- of regular use. Suitable for Riders of All Ages: Whether you're a seasoned pro or just starting out, these chain tensioners are an essential- part of any riders toolkit. Ideal- for Off-Road Adventures: If you're looking to take your Razor MX500/MX650 off-road, these tensioners will help keep your chain in place even on rough terrain. Easy to Install: With no additional tools required, these chain tensioners can be installed quickly and easily, getting you back on the track in no time-. Specifications: Material: rubber+metal Size: approx 12x10x5cm/4.7x4x2-inch Package Includes: 1xChain Tensioner 1xSpring note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.