Specification: Item Type: Fish Tank Clean Brush Material: Plastic+Magnet Color: Blue+White Optional Type: Small Size, Medium Size , large size Type: Large Size ( / inch): 10.5 * 5.6 * 9 / 4.1 * 2.2 * 3.5 Maximum thickness: 10mm or less / 0.4inch Length of ‘aquarium ( / inch): 60-150 / 23.6-59.1 Type: medium Size ( / inch): 9.6 * 5 * 8 / 3.8 * 2.0 * 3.1 Maximum thickness: 8mm or less / 0.3inch Aquarium length ( / inch): 40-80 / 15.7-31.5 Type: small Size ( / inch): 7 * 3.8 * 5.7 / 2.8 * 1.5 * 2.2 Maximum thickness: 6mm or less / 0.2 inch Aquarium length ( / inch): 40 or less / 15.7inch or less Package weight: approx. 100-262g Package List: 1 * Aquarium Cleaning Brush Note: 1. Due to the different monitor and light effect, the actual color of the item may be slightly different from the color shown on the pictures. Thank you! 2. Please allow 1-3 measurement deviation due to manual measurement.