Specification : Material: ABS plastic Mouth material: rubber Size: 27.5*28.5cm/10.83*11.22in Weight: 650g Applicable scope: toilet, floor drain, sinks, sewers, bathrooms and other pipe dredging. Instruction: Plug mouth and toilet port or pipe mouth should be tightly sealed, otherwise the air leakage affects the effect. Can add a little more water, let the plug immersed in the water, to prevent air leakage. The anti-shallow water film is to prevent the instant strong pressure to cause the water to splatter out. Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement.