Using this fish tape is easy. First, set the case on the ground and use the secondary exit, so you can have both hands free to handle the tape. The free - spinning inner reel allows for fast cable fishing. When you need to change the reel, it's a quick - change process. Make sure to use the compatible replacement reels, like RFTXF - 50 or RFTXF - 100. As for maintenance, keep it clean and dry. After use, wind the tape neatly back onto the reel. Also, avoid over - stretching the tape as its tensile strength is 300 pounds. If you notice any signs of damage, replace the tape or the reel promptly.