... Casting dumbbell1.type:wy-19012.material:the dumbbell is made of cast iron,durable and high quality3.specifications:the casting dumbbell has ... many kinds,it includes the light of dumbbell and heavy dumbbell.the ... dumbbell such as 6,8,12,16 pound,the weight of heavy dumbbell is 10,15,20,25,30 pound4.the ...