Using the Greenlee FTXS-100W fish tape is a straightforward process. First, place the case on the ground to free up both your hands. Then, pull out the fish tape through the formed eye at the end. You can use it for general cable fishing, installation, and pulling tasks. The laser - etched measurement markings on the 1/4 - inch steel tape let you measure and fish in one go, which is really handy. When you're done, use the storage lock to keep the tape secure during transport. For maintenance, every now and then, open the easy - to - open case. Clean the reel and the tape to keep them in good condition. If the tape gets worn out, you can easily replace it with a quick - change reel cartridge. Just make sure you don't over - stretch the tape as its tensile strength is 400 lbs. And always check for any signs of damage before each use.