The Klein Tools 50375 is a 75-foot triple-strand polyester fish tape measuring 1/4 inch in diameter with a nylon eyelet tip. The polyester material is four times more flexible than fiberglass and eight times more flexible than steel, enabling easy navigation around difficult conduit bends and joints. The triple-strand braided design creates rigidity during payout and improves tape strength compared to fiberglass alone. A bright orange strand woven into the triple strand improves visibility in low-light conditions. The polypropylene case features an optimized feed angle for smooth payout and retraction. Non-conductive. Weighs 3.5 lb.
What is a high-flex polyester fish tape, and how does it differ from fiberglass?
The 50375 uses a 3-strand braided polyester construction rather than a solid fiberglass core. Braided polyester is more flexible and smoother-feeding than fiberglass — reviewers describe it as feeding 'like butter' through conduit — and is non-conductive throughout, including the leader. The tradeoff is less column strength: polyester bows more easily in large conduit without wire to guide it.
What is the 1/4-inch width suited for?
The 1/4-inch wide tape provides more push stiffness in the lateral direction than a narrower tape, helping the braided polyester maintain directionality in 3/4-inch and larger conduit. In 1/2-inch EMT with existing wire, the 1/4-inch width may leave limited clearance.
Is the 50375 fully non-conductive?
Yes — polyester is non-conductive throughout, including the nylon leader. The 50375 is safe for use in conduit where energized conductors may be present, with no conductive components to create a shock path.
When is 75 feet the right length for a polyester tape?
For single-story commercial runs and longer residential pulls where the smooth braided feed is an advantage over stiffer fiberglass. If the job regularly requires more than 75 feet, the 50376 (150 ft) is the same tape in a longer length.
What warranty covers the 50375?
Lifetime warranty from Klein Tools.
# Klein Tools 1/4 in. x 75 ft. High-Flex Polyester Fish Tape **Model:** `50375` **Brand:** Klein Tools **Category:** Fish Tape > The Klein Tools 50375 is a 75-foot triple-strand polyester fish tape measuring 1/4 inch in diameter with a nylon eyelet tip. The polyester material is four times more flexible than fiberglass and eight times more flexible than steel, enabling easy navigation around difficult conduit bends and joints. The triple-strand braided design creates rigidity during payout and improves tape strength compared to fiberglass alone. A bright orange strand woven into the triple strand improves visibility in low-light conditions. The polypropylene case features an optimized feed angle for smooth payout and retraction. Non-conductive. Weighs 3.5 lb. ## Specifications | Attribute | Value | |---|---| | Product Type | Fish Tape | | Material | polyester | | Tape Width In | 0.25 | | Tape Length Ft | 75 | | Leader Type | nylon | | Non Conductive | Yes | | Overall Length In | 12.38 | | Weight (lbs) | 3.5 | | Barcode (UPC) | 092644503757 | | Warranty | Lifetime | Source: https://www.jaspecs.com/klein-tools/fish-tape/50375-klein-tools-high-flex-polyester-fish-tape-75-foot/