Specification Brand : caralin BulletPoint1 : ❀ The test tube is f ABS plastic with 6 holes. Diameter of four holes is 18mm. Diameter of 2 holes is 13mm. BulletPoint2 : ❀ it is convenient to hold and move. Useful for students. Perfect for teaching use at school. BulletPoint3 : ❀ Material: ABS Plastic. Size: 16x4.9x5cm/6.30x1.93x1.97". BulletPoint4 : ❀ Economical and space-saving test tube rack for student use or applications in lab or at home. BulletPoint5 : ❀ Easy to disassemble and install, convenient to carry. and long service life, easy to clean. Color : As Pic Shows ExternallyAssignedProductIdentifier : 7657670071859 GpsrSafetyAttestation : 1 ItemName : caralin 1pcTest Tube Holder 6 Hole Plastic Rack Stand Burette Stand Shelf Laboratory ItemPackageDimensions_Height : 0.5 inches ItemPackageDimensions_Length : 1 inches ItemPackageDimensions_Width : 1 inches ItemPackageQuantity : 1 ItemTypeKeyword : science-lab-tube-racks Manufacturer : caralin Material : Plastic ModelNumber : 5AC600268_caralei PartNumber : 5AC600268_caralei ProductDescription : Features: The test tube is f ABS plastic with 6 holes. Diameter of four holes is 18mm. Diameter of 2 holes is 13mm. it is convenient to hold and move. Useful for students. Perfect for teaching use at school. Material: ABS Plastic. Size: 16x4.9x5cm/6.30x1.93x1.97". Economical and space-saving test tube rack for student use or applications in lab or at home. Easy to disassemble and install, convenient to carry. and long service life, easy to clean.