Item Type: Barbell Adapter SleeveMaterial: PP Color: Black Diameter: Approx. 5cm/1.97in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Premium Material: Made of premium PP, the barbell adapter sleeve is sturdy and durable, reliable, wear resistant and has a long service life. 2Change Diameter: The adapter sleeve can convert barbell rod diameter from 25mm to 50mm, i. e. 0.98in to 1.97in, you can use it to meet your needs. 3Convenient: The black barbell adapter sleeve can convert barbell rod diameter, so that your barbell can fit more barbell plates with different sizes. 4Jolt Resistant: The PP adapter sleeve is equipped with fastener, which can effectively prevent the barbell plates from jolt or loose, convenient and safe for you to use. 5Wide Application: The barbell diameter adapter sleeve is suitable for gym, fitness center, home and other places, a wide range of application.