A product of Shanks (1930s/50s), this was a powered roller mower halfway between the smaller "Firefly" and the larger "Dragon". In 1939 the "Dragonfly" was being offered in 20 and 24 inch sizes at £70.0.0d and £80.0.0d respectively. A J.A.P. 4-stroke engine was fitted. By 1950 only the 24 inch model was being offered. A trailing seat was an optional extra.