Can anyone advise which spikes work with these shoes? I have a pair that are still in reasonable shape but need new spikes. thanks.
Welcome. I'm pretty sure those aren't the newer tri-lock/twist locking system. But i'm not sure if those are small or large thread Softspikes -- from a few posting on eBay they might be the smaller threads.
However, take them to your local proshop first, then a local retailer, and have them remove one and confirm. I just looked at the on-line retailers and most seem to carry the older style threads as well.