40kg Olympic 51.5mm Weight Plates Cast Iron – Tri-grip Design This Cast Iron Weight Plate coated is olympic 51.5mm hole suitable for all olympic barbells. Each Weight Plate has triple grip handles (tri-grip plate). EZ for being used as hand weight Training method. Each plate is kilogram weighted with weight. Tri-Grip Handles Plates 51.5mm diameter hole so that they will fit olympic bars Weight Plates : 1.25kg x 4+ 2.5kg x 4+ 5kg x 2+ 7.5kg x 2