Built to meet high school boys varsity competition standards, this shot put delivers the accuracy and consistency athletes need to perform at their best. Its symmetrically balanced cast iron construction promotes a smooth, controlled release, while precision calibration ensures compliance with official specifications. Ideal for training and competition, it's designed to help throwers develop confidence and consistency in every attempt. Product Features Standard weight for high school boys varsity competition Official dimensions with a 4.5" diameter and 14" circumference Symmetrically balanced cast iron construction for dependable performance Smooth, predictable release supports consistent throwing technique Calibrated to 5.45 kg (12 lbs) with a strict -0 / +0.05 kg tolerance Designed for use on track surfaces and competition areas