どっち: which way

「あの二人ふたり、どっちも頑固がんこなのにうまくいってるね。」「割れ鍋に綴じ蓋われなべにとじぶたってやつだよ。」

"Those two are both stubborn, yet they get along well." "A cracked pot and a mended lid, as they say."