Urethane is great because it doesn't make a racket. In my 400 square foot of gym space the clanging of my steel weights is distracting and fatiguing. In my 20's I loved steel weighs, now I appreciate the quiet comfort of urethane. Nice to have handles on the 10lb plates. Most sets with handles stop at the 25lb plates. Hammer Strength brand name motivates me and has since I first started lifting. Stainless steel ring insert is beautiful. I will replace all my steel weights in my gym over time. Great product.