Yes they have a large amount of mini excavators on hand they have many different size buckets to pick from. I believe your best fit would be the 18" wide bucket they offer. Grand Rental's customer service is 5 🌟 if they dont have what you are needing, they will get it!!
I just rented one last month to put in a new drain field and they definitely have those sizes. Pretty sure they have from 12" up to 24" bucket for the mini excavator.
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