They range in length from 2.5 to 4.5 metres ( 9 to 15 feet ) , and have an approximate maximum weight of 800 kg ( 1,750 lb ) .
Isurus range in length from 2.5 to 4.5 metres ( 8 to 15 ft ) , and can grow to about 800 kilograms ( 1,760 lb ) .