Qualitoys were first issued in September 1969 with a further six added to the group sometime in 1971. Production appears to have ceased in 1972. Slightly larger than normal Corgis and possibly approaching the 1:36 scale which would be the major series for Corgi from 1972, these were branded as 'Turbine Truck' or 'Jumbo' but were not based on any real vehicles. Fairly simple in design they were intended for younger collectors, although several had interesting features. None had suspension and all but the Dozer had free-spinning wheels with 'pneumatic' tyres.