2 3⁄4" Kuruvi crackers are traditional, small, single-sound fireworks, about 2.75 inches long, known for their sharp, loud "pop" and minimal flash. Sold in packets of 5 pieces, they are popular for Diwali and festivals, named after the fast, lively sparrow ("kuruvi" in Tamil), and are a favorite for children under adult supervision, providing safe, traditional entertainment.