Gardner Bender JLP5 50-Feet Slipry-Snake Replacement Fish Tape, Nylo-Flex Designed for use in Conduit with existing wires or cables Glides through 1/2-4 inch. Conduit High-strength nylon tape tested at 300 lbs. Average tensile strength 6 inch. Spiral wound metal leader with pulling eyelet included Tape diameter is 3/16 inch