The Scrubber Duckys Magnetic Scrubbers Kit is sure to fit the bill, whether your cleaning is big or small. These scrubbers remove stubborn resin, biofilm, and other contaminants that accumulate in pipes. Its strong magnetic force allows it to attach to the inside of your pipe, pulling away dirt and grime with ease as you direct its efforts from the outside. These tools are safe to use on glass, acrylic, and silicone in combination with your preferred cleaning solution. Includes two magnetic ducky scrubbers, two mini-egg scrubbers, one micro-egg scrubber, and one heavy-duty magnetic handle to tackle even the toughest jobs.