I have owned the Adjustable Stealth 41.5 kg dumbbells (Chrome Edition) with the Heavy Duty support for two months, and they have proven to be an outstanding piece of equipment. I purchased them to replace my previous 24 kg Bowflex dumbbells, and there is simply no comparison. The build quality, functionality, and overall usability of the Stealth dumbbells are exceptional—they operate in a completely different league. I have been recommending them to everyone I know who trains.