Gym Weight Stack Extension Cord Steel Stack Pin for Weightlifting Exercises Description: [Premium and Reliability] The weight stack exercise pin is made of steel, which is durable, not easy to break and has a long service life. [High Performance] Longer pin length helps maintain weight level when moving along the bar. [Easy to Use] The weight stack locking pin is lightweight and easy to insert and remove, convenient for daily use. [Wide Application] The weight stack extension pin can be attached to the designated machine to exercise wrists, fingers, forearms and elbows, arms, biceps and triceps. [Nice Accessories] The exercise pin is an essential addition to exercise machines, as well as a gift for family, friends and lovers who enjoy fitness. Specification: Material: Steel, PP Size Chart: Suitable for barbell plates with an inner diameter of 50mm, Pin Diameter: 8mm The package includes: 1 gymnastic weight stack pin