Klein Tools 56056 Fiberglass Fish Tape, 200-Foot Wall Snake is 3/16-Inch Wide Non-Conductive Multi-Groove Fish Tape with 7-Inch Leader

Larger diameter than a metal fish, and you do need to remember it's fibreglass, but works far better than a metal fish in conduit. Highly recommend.

I never knew how valuable this could be until I had to pull cables through a very crowded conduit. Not only did this “snake” it’s way through with ease, but it was strong enough and made Pulling the cable back through a breeze. Would highly recommend it. If you plan on running a lot of cables go for the 200’ version. Since I only needed to go about 50’ and will use it for more residential applications I opted for the 100’. Can’t go wrong. Made life a lot easier and saved me a lot of headaches

I workout with outside conduits that range from small to large or empty and or filled with cables, ect. Been super nice to use and the tip hasn't come off(heard it's a big problem it's most fishtapes), it's a expensive tool but not the most expensive and I'd buy it again for 200 ft length

Works great easy to use.

My go to fish tape for all jobs that require fishing wire into conduit. Works great on aluminum conduit. Core is a bit stiff and is likely to crack, this is my third fish tape that I have purchased due to the core cracking. But I do enjoy the ease of pushing the fish tape into conduit, this is the reason why I have returned to purchase again.