With this .75kg rubber discus for girls athletics, youll finally have a practice discus that matches your toughness! This brightly-colored practice discus wont leave black skid marks on your gym floor, and its sturdy rubber is perfect for indoor or outdoor training. Measuring in at the standard .75kg weight and 16.5cm diameter, your practice just got a little more perfect. Why Youll Love It: There are a lot of practice discuses on the market, but almost all of them will leave annoying black scuffs your floor. With this durable, colored discus, you can focus on developing the perfect throw and leave it to your .75kg rubber practice discus to keep things tidy. Regulation size for girls athletics. .75 kilograms, 16.5 centimeter diameter.