That's a piece of round steel wire that has been bent and stamped. Then it's plated.
Likely no heat treating.
$20.03 at my local JD Dealer.
Buy a couple and hang them on the garage wall.
As soon as you have spare parts waiting, you will never have one fail again.
And if you break one again, you'll have a spare handy.
As to why it breaks, it isn't strong enough to do the job it was originally designed to do.
Of course I'm assuming you can change the $20 part yourself.
Likely no heat treating.
$20.03 at my local JD Dealer.
Buy a couple and hang them on the garage wall.
As soon as you have spare parts waiting, you will never have one fail again.
And if you break one again, you'll have a spare handy.
As to why it breaks, it isn't strong enough to do the job it was originally designed to do.
Of course I'm assuming you can change the $20 part yourself.