Dumbbells with adjustable weight and a knurled grip for comfortable training. - Weight: 10kg x 2 sets - Length: 105mm - Material: Plastic - Features: Knurled grip - Sound characteristics: Reduced floor noise - Processing: Stepped processing to prevent rolling My husband recently purchased these, but they seem to be too light, so I am putting them up for sale. Shipping to Okinawa and remote islands will be an additional 8,000 yen.