uxcell 10 Pcs 3.9" Length Laboratory Test Tube Bottle Cleaning Tool Nylon Brush Product Name : Test Tube Brush;Material : Nylon, Metal, Plastic Main Color : Black;Brush Size : 2.5 x 0.8cm / 1" x 0.3" (L*Max.D) Handle Size : 7.5 x 0.4cm / 2.95" x 0.16" (L*D);Total Length : 10cm / 3.9" Net Weight : 13g Package Content : 10 x Test Tube Brush