Quality Material: The gym weight stack pin is made of quality steel, ensuring its sturdiness and durability. It's not easy to break, promising a long service life.Optimal Performance: With a length of 315mm, the longer pin helps maintain the weight level as it moves along the bar, enhancing your workout performance.User Friendly Design: This weight stack locking pin is lightweight and easy to insert or remove, making it convenient for daily use in your fitness routine.Versatile Use: This weight stack extender pin can be secured to their designated machine for various exercises. It's great for working out wrists, fingers, forearms and elbows, shoulders, biceps, and triceps. Suitable for barbell plates hole with an inner diameter of 26-30mm.Great Fitness Accessory: An essential accessory for exercise machines that makes an excellent gift for family members or friends who like fitness. Each package includes 1 weight stack pin, 1 spring clip and 1 R Shaped Pin. Size Chart: Length 31.5cm/12.40inchSuitable for barbell plates inner hole diameter 26mm-30mm. Package Includes: 1 weight stack pin1 spring clip 1 Cotter Pin Note: Please allow slightly errors due to manual measurement and different monitors.