Weight: 6 kg. The Sport-Thieme PU Dumbbell: The right weight for everyone. The Sport-Thieme PU Dumbbell is a high-quality cast iron dumbbell that is easy to grip and fits comfortably in the hand thanks to its PU coating and handles. This dumbbell is particularly used in strength training, where it can be utilized in various weight options for group classes or for gradually building muscle, as well as for regular strength training with heavier weights. Weight: 6.0 kg. Material: Cast iron, Polyurethane (PU). Grip texture: Smooth. Color: Black. Bar material: Cast iron, Polyurethane (PU). Outer material: Polyurethane.