Feature:1. Applicable Model: The chain tensioner roller is universal for mini bikes, replacement for Baja Doodle Bug Blitz Dirt Bug Racer mini bike. Please confirm whether it is consistent with the product you want before buying to avoid unnecessary return.2. Enhanced Safety: Chain tensioner roller pulley ensures proper chain tension and alignment, can prevent chain loose, fall off, reduce sprocket or chain wear. extending chain life, preventing chain derailment during driving, which may cause chain loss or breakage or eventually damage side covers and stator plates.3. Premium Material: The chain tensioner roller pulley guide wheel is made of high strength ball bearing steel and plastic, sturdy, upgraded spring, thicker steel wire, not easy to break and damage, ensuring long lasting use.4. Easy to Install: The mini bike chain tensioner roller has a simple installation, convenient and effort saving, don't need too much tools or complicated steps.5. Ideal Replacement: The chain roller tensioner wheel guide is a perfect replacement for repairing and modification, can directly replace the old and broken accessory, ensuring the normal operation.Specification:Item Type: Chain Tensioner RollerMaterial: Plastic, Ball Bearing SteelsFunction: Adjust the tightness of chainFitment: Universal for Mini BikeReplacement for Baja Doodle Bug, for Blitz, for Dirt Bug, for Racer Mini Bike.Package List:1 x Chain Tensioner Roller