Features 1. High quality materials: Our weight stacking pin are made of durable heavy-duty steel, ensuring they can withstand the test of fitness classes and be used for many years. Pin has anti rust properties and can extend its service life. 2. Easy to use: This weight bolt is easy to insert and remove from the weight pile. The handle can also be firmly grasped to ensure safe and effective weight adjustment. 3. Advanced muscle engagement function: The weight switch pin replacement function can pre select different weight levels for a single group of movements, thereby enhancing muscle activation and engagement. 4. Universal type: This weight stacking pin adopts a standard diameter and is suitable for most fitness equipment. It is the perfect accessory for home gyms, fitness studios, or commercial gyms. 5. Safety locking: This weight stacking pin is designed to be sturdy and securely locked in place, allowing for safe and seamless weight replacement. You can adjust the weight with confidence without worrying about the pin slipping out. Specification Material: ABS+Metal Color: Black, White, Blue, Grey Size: 20 x 15 x 5.5 cm Weight: 260 g Package Include: 2pcs Weight Stack Pin