Sport Type: Diving This is an 8kg weight set for diving. You can choose a combination of 1kg and 2kg weights. The number of weights can also be adjusted to your preference. We have a large stock of both 1kg and 2kg weights. 《Weight Size》 1kg: Approximately 75mm (length) x 85mm (width) Groove width: Approximately 55mm, Thickness: Approximately 20mm