Play NYT Connections Puzzle #819 Tue, Jul 29

Find groups of four related words Need hints?

Solve NYT Connections puzzle #819 - Group 16 words into 4 categories: DEAL, PROMOTION, SALE, SPECIAL, BUG, NETTLE, RUFFLE, STEAM, CALL, CHECK, FOLD, RAISE, BRAKES, FIST, GAS, IRON.