Specification Brand : ONiLAB BulletPoint1 : Insert for 8test tubes 16mm diameter, Not Include Vortex Mixer Machine & Test Tubes BulletPoint2 : Keeps load balanced in mixer decreasing wear on motor BulletPoint3 : Use with universal adapter BulletPoint4 : No insert retainer or vessel harness needed BulletPoint5 : Prevents breakage in mixer Color : BLUE ItemName : ONiLAB Scientific Test Tube Insert for 8 Test Tubes of 16mm Diameter, Use with Universal Adapter, Not Include Vortex Mixer Machine & Test Tubes ItemPackageDimensions_Height : 7.25 inches ItemPackageDimensions_Length : 4.4 inches ItemPackageDimensions_Width : 1.75 inches ItemTypeKeyword : science-lab-test-tubes Manufacturer : ONiLAB Material : Polyethylene (PE) NumberOfItems : 1 PartNumber : 18900023 ProductDescription : ONiLAB Scientific Test Tube Insert for 8Test Tubes of 16mm Diameter, Use with Universal Adapter, Not Include Vortex Mixer Machine & Test Tubes ProductSiteLaunchDate : 2022-12-22T08:00:41.980Z Size : 16MM Style : Tube Insert 16mm(10mL)