The Urban Fitness 50kg Dumbbell/ Barbell set has multi-functional design, making it ideal for quick weight lifting workouts at home. Each set comes with 2 dumbbell bars that can be connected together using the included connector to create a barbell. Each set comes includes: 4 x 5kg Plates, 8 x 2.5kg Plates, 4 x 1.25kg Plates, 4 x 1kg Plates, 2 x Barbells (675g each) 1 x Connector (380g) and 4 x Spindle locks. With this selection you can build the weights up in many configurations, but the maximum weight configurations are: 2 x Evenly loaded Dumbbells – Load each dumbbell with 2 x 5kg, 4 x 2.5kg, 2 x 1.25kg and 2 x 1kg. With the bar this totals 25kg each. 1 x Maximum Loaded Dumbbell -Load 1 dumbbell with 4 x 5kg and 4 x 2.5kg. With the bar this totals 30kg. 1 x Maximum Loaded Barbell -Connect the two dumbbells together using the connector and load with 4 x 5kg and 4 x 2.5kg. With the barbells this totals 31kg. The weight plates are built from a concrete compound, encased in a vinyl shell designed to help prevent potential impact damage to flooring.