The Klein Tools 50660 is a 40-foot glow-in-the-dark fiberglass fish tape measuring 0.153 inch wide with a non-conductive nylon eyelet tip. The fiberglass tape is fully removable from its clear polypropylene case for wall cavity, drop ceiling, and conduit pass-through feeding. The clear case charges the glow material in natural light for 1 hour or general lighting for 30 minutes. The anchor end features a stainless-steel fish rod connector compatible with Klein Fish Rod attachments. The 9-inch reel diameter and 1.6 lb weight suit daily carry for mid-range wire runs behind walls and ceilings. Made in the USA with global components.
How does the 40-foot 50660 differ from the 20-foot 50550?
The 50660 doubles the reach to 40 feet, extending coverage to two-story drops, longer wall cavity runs, and ceiling-to-floor passes in standard residential construction. Both use the same glow-in-dark fiberglass construction; the difference is reach.
What glow-in-dark property makes fish taping easier?
The photoluminescent tape body glows in dark spaces, making the tape tip visible through conduit openings, wall gaps, and ceiling cavity access points without additional lighting. This reduces exploratory cutting and drilling when locating the tape end.
Is the 50660 non-conductive throughout?
Yes — fiberglass body and glow leader, no conductive components. Safe for use in enclosed walls and conduit where energized conductors may be present.
When would I choose the 50660 over a standard fiberglass tape?
When confirming tape position in dark cavities is important — low-voltage installers, audiovisual contractors, and network cabling crews working in finished walls where exposing the far end is difficult. For standard conduit work with accessible endpoints, a non-glow fiberglass tape is equally effective.
What is the warranty?
Lifetime warranty from Klein Tools.
# Klein Tools 40 ft. Glow-in-the-Dark Fish Tape **Model:** `50660` **Brand:** Klein Tools **Category:** Fish Tape > The Klein Tools 50660 is a 40-foot glow-in-the-dark fiberglass fish tape measuring 0.153 inch wide with a non-conductive nylon eyelet tip. The fiberglass tape is fully removable from its clear polypropylene case for wall cavity, drop ceiling, and conduit pass-through feeding. The clear case charges the glow material in natural light for 1 hour or general lighting for 30 minutes. The anchor end features a stainless-steel fish rod connector compatible with Klein Fish Rod attachments. The 9-inch reel diameter and 1.6 lb weight suit daily carry for mid-range wire runs behind walls and ceilings. Made in the USA with global components. ## Specifications | Attribute | Value | |---|---| | Product Type | Fish Tape | | Material | fiberglass | | Tape Width In | 0.153 | | Tape Length Ft | 40 | | Leader Type | glow | | Non Conductive | Yes | | Reel Type | clear removable | | Overall Length In | 11.3 | | Weight (lbs) | 1.6 | | Barcode (UPC) | 092644506604 | | Warranty | Lifetime | Source: https://www.jaspecs.com/klein-tools/fish-tape/50660-klein-tools-glow-dark-fish-tape-40-foot/