A gerb is a product which produces a jet of sparks for a set duration of time and height. It is a thick-walled tube filled with pyrotechnic composition and possessing a choke, which is a narrowing in the tube.
A gerb is a product which produces a jet of sparks for a set duration of time and height. It is a thick-walled tube filled with pyrotechnic composition and possessing a choke, which is a narrowing in the tube.