Designed for middle school boys and youth-level training, this competition-style shot put delivers dependable performance and accuracy. The symmetrically balanced cast iron construction promotes a smooth, predictable release, helping athletes develop proper technique. Precision calibrated to official weight specifications, it's built to provide consistency for both practice sessions and track and field competition. Product Features Recommended for middle school boys and youth-level training athletes Official dimensions with a 4.0" diameter and 12.5" circumference Symmetrically balanced cast iron construction for reliable performance Smooth, predictable release helps improve throwing consistency Calibrated to 3.6 kg (8 lbs) with a strict -0 / +0.05 kg tolerance Designed for use on track surfaces and competition areas