Designed for maximum security and ease of use, this ball head safety pin with a single ball is for weight other gym equipment. Its sturdy construction and reliable locking mechanism ensure a firm hold, making it an essential tool for any fitness enthusiast looking to enhance their workout safety and efficiency. Features -Color:Black -Material:Iron -Size:13.00X3.00X3.00cm/5.11X1.18X1.18in -Improved support: the ball head safety pin and ball pin design offer improved support, enhancing your comfort during use -Secure locking system: the ball head locking pin ensures the chair stays securely in place, your safety -Adaptable usage: suitable for home, office, and leisure environments, this pin caters to various needs -Durable and : made from materials, this pin is built to last -Easy to install: the straightforward design of the pin allows for installation, saving you time and effort Package list: 4 x Weight Stack Pin