The scarab hoe is a stronger form of hoe crafted with a diamond or gold hoe and the extremely rare scarab gem, which is gained from mining fossil blocks. For comparison, a diamond hoe has a durability of 1562. It has the same block-breaking speed as bare hands. They can be repaired with relic scraps in an Archeology Workbench.
After it's extensive durability has been used up (however you managed to do that), the scarab hoe can be repaired with relic scraps in an archeology workbench. While doing this however, any enchantments you have on it will be erased.