My product shipped about 4 hours after I sent the payment. Installation time: about 2.5 hours per tire, with 192 studs per tire. Installation was fairly straightforward. For more on that see my YouTube:
First ride: On two studs, the carbide piece broke off flush with the steel ****** at the surface of the rubber tire knob. So I replaced those. My guess is that those carbide pieces became micr-cracked during manufacture, and I find a tiny failure rate acceptable. Second ride: a mix of soil and ice on the trail with some rocks and many roots. No studs broke and none loosened. None fell out. Third ride: very little ice, many rocks and roots. No stud loss or damage. The grip on ice is absolutely excellent. Also, the studs work very well on slimy roots. Bare rocks: not so well, but no complaints there. Studs work great on wooden bridges [which can be crazy slippery when wet].
Iâ€™m VERY, VERY pleased.
Overall: Iâ€™m very satisfied with the service and the product. My YouTube videos have MUCH more info on installation.