The EFT-50B is the perfect tool to fish short runs in existing structures. The aerodynamic tip reduces friction, requiring less force and decreased hang-ups. The special steel wire does not curl up when extended, allowing the tape to be easily fed over suspended ceilings, down walls and under carpeting. Grab this tape the next time you need to install wiring for electrical boxes, outlets, lighting fixtures, doorbells, datacom and security systems. 50 ft long .