Using the Milwaukee 48 - 53 - 2789 1 - 1/2' Rust - Resistant C - Cutter is easy. First, make sure your drain machine is turned off. Connect the cutter to the drain cable using the small - diameter connecting point, which allows for easy attachment swapping. Then, turn on the drain machine and guide the cable into the drain. The unique cable wind design provides a strong pull force, and the solid polymer core ensures good maneuverability. When using, pay attention to the end - of - cable indicator, which is about 3’ from the back end, to avoid over - inserting. To maintain this product, after each use, clean the cutter and cable to remove any debris. Thanks to the RUST GUARD plating, it has high rust resistance, but it's still a good idea to store it in a dry place to extend its lifespan. Also, check the cable regularly for any signs of wear or damage. If you notice any issues, contact the manufacturer as it comes with a 2 - year warranty against defects or breakage.