These are the 2.5mm retention screws that thread into the crank axle of the elliptical model bikes that take these.
Replacement Retention Screws – 3C/8C/11R
Replacement Retention Screws – 3C/8C/11R
$5.99
*Note, if you have an 8S model ElliptiGO, you may not have the axle that takes the retention screws. If you are not sure if your bike uses the retention screws, please contact our service team.