CORTEX 40kg Cast Iron Curl Bar Weight Set (Standard) Our Cortex 25mm Standard Sized Cast Iron Weight Plates are durable and reliable, built to last and stays strong even in intense workouts. Workout your arms and core with a set of curl bar and weight plates combining up to 40kg. - FEATURESOur Cast Iron Standard Weight Plates are extremely strong, and will last a lifetime. Don't settle on cheap cement or sand weights that will crack. - All plates are standard sized to suit 25mm Bars & Barbells. Plate hole diameter will have a variance between 25mm - 30mm. - Cast Iron Construction - Plates come with a lip (thicker edges) for easier grip & handling - Weights & Bar4 x 1.25kg Cast Iron Standard Weight Plate (25mm)4 x 2.5kg Cast Iron Standard Weight Plate (25mm)4 x 5kg Cast Iron Standard Weight Plate (25mm)1 x Standard Ez Curl Bar with 2 Spiral Spin Collars - Set Weight plus Bars: 40kg