MagnumPRO™ Oil-Tempered Spring Steel Replacement Fish Tape 50' x 1/8" (15.m x 3.2mm) in Case (5 Pack). Rugged case design improves drop impact capability. Oil-tempered spring steel for excellent fishing performance. Advanced comfort handle grip reduces fatigue. Superior rapid tape pay-out and rewind. Improved low profile tip for easy fishing through all sizes of conduit. Viewing port gives visibility to remaining tape and ability to remove job site debris quickly.