General description The 60 Pcs 10mm Dia Chemistry Test Tube Bottle Nylon Brush Washing Tool is designed for effective cleaning of test tubes and various surfaces. The nylon bristles provide flexibility, allowing you to reach difficult areas with ease. Technical specifications Material: Nylon, Stainless Steel Color: White, Silver Tone Brush Size: 8 x 1 cm (3.1 inch x 0.4 inch) (L x D) Total Length: 16.5 cm (6.5 inch) Net Weight: 192 g Measurement allowed error: +/- 1-3 cm Package content 60 x Test Tube Brush