Description With their universal design, these nuts are compatible with a wide range of barbells and dumbbell bars. This makes them a versatile addition to any gym setup. And thanks to their self-locking mechanism, you can be sure that your weights will stay securely in place during your workout. Features -Color:Multi -Material:Cast iron -Size:5.00X3.50X3.00cm/1.97X1.38X1.18in -Compatible with a wide range of barbells and dumbbell bars, this self-locking mechanism provides added safety and security during your workout routine. - durable cast iron materials that resist wear and tear, these self-locking nuts are designed to withstand the test of time. -With an easy installation and removal process, these self-locking nuts offer convenience and flexibility for your fitness needs. -An affordable enhance your workout routine, these self-locking nuts are a good solution for improving your strength training exercises. -Designed to fit a variety of barbells and dumbbell bars, these self-locking nuts ensure a secure and stable grip, allowing you to focus on your workout without worrying about the equipment. Compatible with a wide range of barbells and dumbbell bars, this self-locking mechanism provides added safety and security during your workout routine. durable cast iron materials that resist wear and tear, these self-locking nuts are designed to withstand the test of time. With an easy installation and removal process, these self-locking nuts offer convenience and flexibility for your fitness needs. An affordable enhance your workout routine, these self-locking nuts are a good solution for improving your strength training exercises. Designed to fit a variety of barbells and dumbbell bars, these self-locking nuts ensure a secure and stable grip, allowing you to focus on your workout without worrying about the equipment.