Feature: * Brand New and high quality. *It is made of high quality environmentally friendly material, suitable for all 1" Standard Weight Lifting Barbells or Dumbell Bars(hollow rod ). *Spinlock Collars are easy and quick way to move your plates around. *They also keep weight plates securely and safely while lifting. *Made from robust and material for long lasting use. *Single-action cam lock secures position on the bar. *Easy and Quick to remove,Safely locks and secures weight plates. Product parameters: *Material: environmentally friendly plastic *Color: Red/Black (as shown in the picture) *Size: about 25.4mm(1") *Quantity: 2pcs Package included: 2 * Dumbbell Nut 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. Made from high-quality materials, our outdoor sports products are durable and affordable to meet your daily needs. Please check the product size and model before placing an order to ensure it is the product you need. When you encounter a problem, please contact us and we will help until the problem is perfectly solved. When you receive your product, whether you are satisfied or not, we want to hear your opinion. Every customer can enjoy free refund or exchange service for damaged/quality problem products.