Hey electricians and contractors - this Greenlee 618 piston is exactly what you need for fishing lines through 5-inch conduit. The flexible foam body creates an airtight seal that works perfectly with your blower or vacuum power fishing system. What's really handy are the color-coded end disks with embossed size markings - makes it super easy to grab the right piston when you're up on a ladder or working in low light. The strong steel center rod has loops on both ends for secure attachment to your fishing line. I've used these on commercial jobs where we're running lines through long conduit stretches, and they just work reliably every time. The foam is durable enough to handle rough surfaces inside the conduit without tearing up. Much better than trying to rig up some homemade solution that never seals properly. The quality is exactly what you'd expect from Greenlee - professional grade tools that get the job done faster and safer. Whether you're pulling communication lines, electrical wires, or any other cabling through 5-inch conduit, this piston makes the whole process smoother. It's one of those specialized tools that seems simple but makes a huge difference in productivity on the job site. Definitely worth having in your electrical tool kit if you do any serious conduit work.
