Crafted from cast iron materials, these nuts are built to last. They are resistant to wear and deform, can use them for years without worrying about wear and tear. And because they are finely crafted, they are easy to install and remove as needed. Features -Color:Silver -Material:Cast iron -Size:5.00X5.00X3.00cm/1.97X1.97X1.18in -Note:suitable for 2.5cm diameter rod. -The practical design of home dumbbell bar and barbell bar allows for compatibility with a wide range of weights. -The self-locking mechanism of the product ensures that the weights stay securely in place without slipping. -The use of cast iron materials in the construction of the product its durability and performance. -The installation and removal of the product is easy and convenient, providing added convenience for users. -The product is a practical option for upgrading your household gym, can be used for a long time. Package list: 6 x nuts