1 50kg metal round dumbbell set

{"cid":"91196718","title":"Rubber Round dumbbells, round rubber dumbbells, body solid round rubber dumbbells","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/34\/03\/c936b991df0947a26c7f673aa527-200x200-1.jpg","attrs":{"Price":"$4.2-$50","Brand Name":"POTESRI","Model Number":"5 lb, 10 lb, 15 lb, 20 lb, 25 lb, 30 lb, 50 lb","Minimum Order Quantity":"10 sets","Delivery Time":"7 days","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union","Supply Ability":"100,000 per month","Packaging Details":"carton","Color":"Black","Grip":"electroplating steel, non-slip","Material":"natural rubber, cast iron","Surface":"anti-rust treatment"}}

{"cid":"91221064","title":"Round Head Cast Iron Dumbbells Olympic Barbell Set 25kg 50kg","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/e5\/ce\/6692066ffb8fa02e83bff50b0ba8-200x200-1.jpg","attrs":{"Price":"customized","Brand Name":"YM","Model Number":"ONT-S04","Minimum Order Quantity":"1000 kgs","Delivery Time":"5-8 work days","Certification":"CE,SGS,IOS","Place of Origin":"China Mainland","Payment Terms":"L\/C, D\/A, D\/P, T\/T, T\/T, MoneyGram","Supply Ability":"800 pieces\/month","Packaging Details":"carton box","product_attributes":"2.5kg,5kg,10kg,15kg,20kg,25kg,30kg,35kg,40kg,45kg,50kg","material":"steel and rubber","logo":"customized","Gender":"Unisex","Application":"Universal","Color":"Black","Usage":"weight lifting"}}