1.Material: The pipe piston is made of durable ABS material, natural rubber, stainless steel tie rod which is of high strength and long life and cannot be easily damaged. The length of the vacuum tube excavator is 45 cm / 17.7 inches, the suction cup diameter 16 cm / 6.3 inches. 2.Operating principle: Vacuum the air in the clogged pipes to create a strong air pressure difference, and whip the clogged objects vigorously to achieve the purpose of excavation. 3.How to use: 1. Choose the appropriate laying methods to ensure a good seal without gaps. 2. Add water so that it covers the suction cup by 35 cm. 3. Start with the handle at the lowest point, lift the handle and press it down until the blockage is resolved. 4. Removes blockages and dirt with strong suction power thanks to powerful piston; dissolves after a few impacts by strong suction cup. Ideal for cleaning sinks, bathtubs, showers, bidets, sinks or other drains or spouts.