After capturing the Canaanite king Adoni-bezek, what did the men of Judah cut off?

Answer: His thumbs and big toes

Adoni-bezek admitted he had done the same to seventy kings: "As I have done to them, so God has repaid me."

“As Adoni-bezek fled, they pursued him, seized him, and cut off his thumbs and big toes. Then Adoni-bezek said, “Seventy kings with their thumbs and big toes cut off have gathered the scraps under my table. As I have done to them, so God has repaid me.” And they brought him to Jerusalem, where he died.”— Judges 1:6-7 (BSB)