The original metal pin is available from the after-sales service.It is the same pin as for our Collapsible Rack 500 (ref: 8616805).If the original metal pin is out of stock, you can also use the pin from our Weights Bench 900 2023. (the opposite is not possible)It is the same diameter but a bit longer.Metal pin (ref: 8827453) for Bench 900 2023 (ref: 8766093)