Flex flyer features a quick change swivel head that installs on the end of a fish tape in 20 seconds by twisting the fish tape with 2 pairs of pliers. The standard 1/4 inch to 28 threads allow for other types of leaders to be attached to the quick change base. Installs in under 20 seconds using two pairs of pliers, no torch needed. Loop technology allows leader to glide through all types of conduit as well as flex. Loops allow leader to be snagged from the other end of the conduit end when necessary.