It has a flat edge so it doesn't roll away.
Fitvids Olympic 2-Inch Cast Iron Plate Weight Plate for Strength Training and Weightlifting, Vintage Style, Alloy Steel,25LB Pair
Fitvids Olympic 2-Inch Cast Iron Plate Weight Plate for Strength Training and Weightlifting, Vintage Style, 35LB Pair
SPART Color Coded Weight Plate 2-Inch Cast Iron Tri-Grip Plate for Barbell,Solid Cast Iron Olympic Weight Plates for Strength Training, Weightlifting, Crossfit, 2.5/5/10/15/25/35/45LB, Single/Pair/Set
Color Coated rucking Weights, 2-Inch Cast Iron rucking Weight for rucking, Swings, Squat, Deadlift, Solid Cast Iron Weight Plate for Strength Training, Weightlifting, 10/15/20/25/30/45LB, Single/Pair