ITEM NAME:5Pcs 19cm Long Chemistry Test Tube Bottle Measurements Cleaning Tool Brush J9R1 5Pcs 19cm Long Chemistry Test Tube Bottle Measurements Cleaning Tool Brush J9R1 Product Name : Test Tube Brush;Material : Nylon, Metal Color : As Picture Shown;Brush Size : 8.5 x 2cm/ 3.3" x 0.8" (L*Max.D) Handle Size : 10 x 1cm/ 3.9" x 0.4" (L*D);Total Length : 19cm/ 7.5" Net Weight : 35g Package Content : 5 x Test Tube Brush 5Pcs 19cm Long Chemistry Test Tube Bottle Measurements Cleaning Tool BrushNot just for test tubes, the nylon bristles are great for cleaning all sorts of surfaces. It's also very flexible, you can bend it around for hard to reach places. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.