DESIGN FEATURES: Weight changes are easily made with a single handle twist Dumbbells must be fully engaged into the cradle to change weight Weight range adjustments of 2.5, 5, 7.5, 10, and 12.5 lbs Easy carry high-strength cradles keep your workouts portable Hex shaped plates (flat bottom) keep your dumbbells in place, no rolling away like round dumbbells Bold weight identifiers on each side of the handle and the tray help identify weight selected Each weight increment "clicks" at each handle turn setting so you can also feel when the weight is selected The chromed steel commercial style grip is knurled and contoured for secure and comfortable use Solid steel weight plates are CNC machined for more precise weight accuracy and smoothness Each weight plate is coated with a durable powder coated paint finish for durability Optional dumbbell rack (sold separately) WARRANTY: 1 year parts