These are for those of you who are handy with a drill and not intimidated by the prospect of changing metal forever.
If you're familiar with a simple hand drill you can easily get these to work with our Grip Kings to get them to get even grippier. The tiny nubs on the Grip Kings are already just the perfect size to be drilled out to accept these spikes; no special tapping is even needed---these spikes will self-tap themselves just fine.
Use an 3/32" or 1/8" bit---the smaller size (3/32") means a tighter fit, but the 1/8" is fine, and makes it easier to screw in. These screw in real easy with a 2mm or 5/64" allen wrench.
Thirty two stainless spikes in each baggie, and four to five per pedal side times four pedal sides per bike means twenty at most, but they come to us thirty-two per bag.
These spikes also work on the older MKS Grip King pedals. The Grip Monarchs come with spikes already.