I have bought several dozen replacement fork heads. I resell many of them and have had no complaints on their strength. I still use my original fork that I bought over two years ago.
The IA-MA mini fork has failed to impress. Having ordered 2 a mere 6 months ago, #1 broke tines within 1 month and another within 5 months. It failed again today. Fork #2 (no pun) was pressed into service. A tine broke within minutes. I have 2 dogs, not elephants. These are made in china but I remained hopeful. No such hope remains. I'll look for another brand and hope that product will last longer than these "jokes for forks".