Conqueror 300 Track and Field Competition Throws IAAF Certified Javelin 600GM 60M This competition javelin is one of our best selling javelins! Some of the best throwers in the world assisted in helping us produce this javelin. These competition javelins are constructed from a composite metal alloy, and are I.A.A.F. certified. The tips are chromed metal, and feature a unique cord-wrap grip. Great for competition or just training.