Specification Brand : GSC International BulletPoint : Hooked Weight Set Of 9, Stainless Steel BulletPoint1 : Assortment of Physics Balls - 12 Count BulletPoint2 : Includes 2 of each material type (Aluminum, Brass, Cork, Steel, Zinc and Wood) BulletPoint3 : 3mm drilled holes BulletPoint4 : Great for various lab experiments such as physics demonstrations BulletPoint5 : 1g to 5kg weights are two-piece construction with adjusting cavity and handling knob Color : Various CpsiaCautionaryStatement : no_warning_applicable ExternallyAssignedProductIdentifier : 8250880029765 ExternallyAssignedProductIdentifier1 : 762047822075 ExternallyAssignedProductIdentifier2 : 0762047822075 ItemName : GSC International 590586-12 Physics Balls Set - Drilled Balls ItemPackageDimensions_Height : 4 inches ItemPackageDimensions_Length : 4 inches ItemPackageDimensions_Width : 4 inches ItemPackageQuantity : 1 ItemTypeKeyword : science-lab-weights Manufacturer : GSC International Material : Various Metals NumberOfItems : 1 PartNumber : 590586-12 ProductDescription : This physics ball set contains twelve drilled 25mm balls – two each aluminum, brass, cork, steel, zinc, and wood. ProductSiteLaunchDate : 2018-10-05T20:00:12.455Z Size : 1/2" height x 3/8" top x 9/32" bottom TargetAudienceKeyword : Professional Audience TargetGender : unisex Theme : Physics UnitCount : 1