Bumper Plate Measurements All the Plates of the same Dia 17 3/4 Inches Long 10 LB Thickness 1 Inch 15 LB Thickness 1 ¼ Inch 25 LB Thickness 2 Inches 35 LB Thickness 2 ½ Inches 45 LB Thickness 2 ¾ Inches 55 LB Thickness 3 ½ Inches Colored Bumper Plates The plates come with Chrome center inserts to protect the plates and the bars Premium Commercial Quality Rubber for Strength Conditioning Training High QualityDesigned for Commercial Gyms and Heavy lifters but they are also great for beginners Our bumper plates is made from high quality rubber, with high styrene content, the rubbers are harder and less rubbery, so that it shouldn't bounce back up These bumper plates are versatile and have the perfect level of bounce to maximize your workout effect and can withstand Thousands of drops High impact resistance even when dropped from overhead They provide a stronger, dead bounce bumper plate for those demanding the highest in quality and performance. Each plate is color coded to provide easy identification and a long lasting engraved marking of the weight size these bumper plates are versatile ant have the perfect level of bounce to maximize your workout effect All weights have the same consistent diameter to maximize surface area when they are dropped Available from 10 LB up to 55 LB to satisfy all levels of users