A gray "Chinese Fuse" is the classic ignition method, though modern variants may use more consistent visco fuses.
The "Pyro Cracker" is the smallest common size in the China-Böller family. China BГ¶ller Pyro Cracker
Because of their smaller powder weight, they produce a sharper, higher-pitched "crack" compared to the deep, bassy "thud" of larger D-Böllers. Modern Classifications and Safety A gray "Chinese Fuse" is the classic ignition