This magnetic Precor replacement weight pin has a 5" shaft with a 5/16" diameter, and comes with a tether. Compatible with OEM #CW33870-102 or #PSPCW33870-102, this weight pin is designed to work with most Precor Modular Line strength equipment models that employ a weight stack. Weight pins are a critical component in all strength machines. However they often go missing in high-traffic gym environment. Buy in bulk and save with our quantity discounts.