Universal 8 mm Pulley chain roller Slider Tensioner Wheel Guide for Motorcycle Pit Dirt Mini Bike Atv(Blue) engine power modification 520

【Strong Function】-- Specially designed with the swing arm; the chain then runs over it to keep it aligned 【Suitable Fitment】-- Inner diameter: 8 mm, can also be used on gas petrol motorized conversions kits 【Good Quality】-- This Pulley Chain Roller is made from the high quality materials, sturdy and durable for long time service 【Convenient Use】-- The chain roller wheel complete with heavy duty bearings very easy to use 【Warm Prompt】-- 8 mm Inner Diameter, Please check the size and confirm this chain roller meet your need