Features: Designed specifically for motorcycle modification, this set of motorcycle retrofitting variable diameter pressure block isolators provides a convenient and efficient solution for adjusting pipe diameters. Made with high quality materials, these isolators ensure durability and stable performances even under high load conditions. With various models and specifications available, they can be easily matched to different motorcycle models and pipe diameters. Motorcycle enthusiasts and modification enthusiasts are the primary users of this product. They aim to enhances performances, personalize their vehicles, and enjoy the thrill of riding. Suitable for professional places such as motorcycle modification shops and repair service centers, these isolators can be used to meet the application needs of variable diameter pressure block isolators in customer's motorcycle modification projects. Additionally, they are also suitable for individual motorcycle modification studios or garages, allowing enthusiasts to fulfill their personalized needs and carry out their own motorcycle modification projects. Specifications: Material:Aluminium Alloy Color:Silver Size:Approx.23mm/0.91inch Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 4pcs Spacer