hard rubber 1,6 kg, designed for serial throwing with a risk of hitting discuses lying on the field, very durable and resistant to unfavourable conditions
hard rubber 1,75 kg, designed for serial throwing with a risk of hitting discuses lying on the field, very durable and resistant to unfavourable conditions
hard rubber 2 kg, designed for serial throwing with a risk of hitting discuses lying on the field, very durable and resistant to unfavourable conditions