Features: * brand new and high quality *Made of high-quality materials, durable and practical *Made of ABS plastic material, lightweight and durable. *High strength, not easy to break and wear-resistant *Prevent the chain from moving to the spokes when it is adjusted improperly *Suitable for mountain bike, road bike, folding bike, etc. *Cassette three-jaw guard plate: outer diameter 135mm (suitable for cassette hubs with a hub lug diameter of 54mm) Specifications: *Material: ABS Plastic *Color: Transparent (As Pictures Show) *Size: 135mm in diameter (Approx) Package Contents: 1*Freewheel Cover Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. 【Cassette freewheel protection cover】This bike accessory is designed to protect the wheel hub and cassette freewheel. Made of high-quality and durable ABS plastic, it provides reliable protection against chain movement to spokes caused by improper adjustments. 【Universal compatibility】Suitable for various bikes including mountain bikes, road bikes, and folding bikes, it fits cassette hubs with a hub lug diameter of 54mm. 【Durable and lightweight】Crafted with ABS plastic material, this cover is not only durable but also lightweight, ensuring long-lasting performance without adding unnecessary weight to your bike. 【Easy to install】With its 135mm diameter, it is easy to install and securely covers the freewheel. Simply attach the cover to the hub lug and ensure a proper fit. 【Practical and reliable】Designed to prevent damage to the bike's chain and ensure smooth riding, this freewheel cover is a practical accessory for any cyclist.