Dredge Plug Air Pump Pressure Pipe Plunger Drain Unclogging Agent Sewer Sinks Blocked Blockage Basin Pipeline Clogged Remover Bathroom Kitchen Toilet Purification EquipmentSpecification:Material: ABS Plastic Mouth Material: Rubber Size: 27.5*28.5cm/10.83*11.22in Weight: 650g Applicable Range: Toilet, Floor Drain, Sinks, Ducts, Bathrooms and other dredging pipes. Instruction: The plug mouth and wc port or pipe mouth should be tightly closed, otherwise the air leakage affects the effect. A little more water can be added, let the plugs submerged in water to prevent air leakage. The shallow water film is to prevent immediate 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 may be slightly different from the color showed on the pictures. Thank you!2. Please allow 1-3cm measurement deviation due to manual measurement.1 x Piston Tube4 x Plugs