Factory Direct sales !! OEM acceptable!!! Product: Rubber massage ball Weight: 146g Diameter: 63.50mm Yellow, White,Orange,Red,Black,Pink,Blue etc Packing: 120pcs/carton it is necessary to massagist or masseur. Use imported silicone or nature rubber material, not too soft ,not so hard ,the hardness is just good as it shows. perfect use for muscle release or relax ,, especially with heat on it