Your question is too broad. There are many materials for making dumbbells on the market. It can be divided into coating, cast iron, electroplating, baking paint and PU…… ........................................................................................................................................................... In addition, different weights have different prices. It depends on your own financial resources. ① paint dumbbells, 18kg only, 180 yuan. ② 20k g 600 yuan for a single PU dumbbell. ③ Cast iron dumbbell 20kg only costs 208 RMB. The above are for reference only, please refer to the market price. I hope my answer can help you.