Features: Design: Weight Stack Pin adopts rust proof and all pins are metal material for durability and corrosion resistance for durability and stability. Easy to Installation & Portable to Use: Easy and quick installation makes it easier for you to use, this weight pin can be quickly replaced. Stable and Durable: Replacement weight stack pins for most brands of fitness equipment; The weight stack pin is durable and stable. Convenient to Use: The springloaded balls provides a convenient and reliable quick release mechanism that retracts when you push-or-pull the pins. Widely Application: The weight stack pin is a great fitness accessories tool which can be used at homes or office. It is a great choice for you... Specifications: Material: Iron+Plastic Color: As The Picture Shows Size Options: 5 Size are Available as Shown in the Picture. Package Includes: 1Pc Weight Pin note: Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!