The Klein Tools 50376 is a 150-foot triple-strand polyester fish tape measuring 1/4 inch in diameter with a nylon eyelet tip, suited for longer wire runs where flexibility is critical. The polyester material is four times more flexible than fiberglass and eight times more flexible than steel, enabling navigation around difficult bends. The triple-strand braided construction creates rigidity during payout and improves tensile strength compared to fiberglass. A bright orange strand woven into the triple strand aids visibility in low-light conditions. The polypropylene case features an optimized feed angle for smooth payout and retraction. Non-conductive. Weighs 5.9 lb.
Why braided polyester instead of steel or fiberglass at 150 feet?
At 150 feet, the braided polyester 50376 feeds smoothly with low friction — electrician reviewers describe it as sliding 'like butter' through conduit. It is fully non-conductive (no steel leader) and lighter than an equivalent steel tape. The main limitation is lower column strength than steel at this length; in large-diameter empty conduit, it may bow without existing conductors to guide it.
What does '3-strand braided' mean for performance?
Three polyester strands are woven together rather than extruded as a solid core. This braided construction is more flexible at the same diameter than fiberglass, distributes pull forces across multiple strands for durability, and creates a surface texture that some users find grips conduit pull lines more securely than smooth solid tapes.
Is the 50376 leader head wide for tight conduit?
Reviewers note that the leader head at the tip is somewhat wider than the tape body — it can be 'a bit clunky' for 1/2-inch EMT already containing wire. In empty 1/2-inch conduit or 3/4-inch and larger, the leader clears without issue. Factor this in for dense existing-wire conduit at 1/2 inch.
How does the 50376 compare to the 56059 (multi-groove fiberglass, non-conductive leader, 200 ft)?
The 50376 is smoother-feeding at shorter lengths (150 ft) with the braided texture advantage. The 56059 extends to 200 feet with multi-groove fiberglass — better column strength for long pushes in large conduit. Choose 50376 for smooth feeding in densely occupied conduit; choose 56059 for maximum length with non-conductive construction.
What is the warranty?
Lifetime warranty from Klein Tools.
# Klein Tools 1/4 in. x 150 ft. High-Flex Polyester Fish Tape **Model:** `50376` **Brand:** Klein Tools **Category:** Fish Tape > The Klein Tools 50376 is a 150-foot triple-strand polyester fish tape measuring 1/4 inch in diameter with a nylon eyelet tip, suited for longer wire runs where flexibility is critical. The polyester material is four times more flexible than fiberglass and eight times more flexible than steel, enabling navigation around difficult bends. The triple-strand braided construction creates rigidity during payout and improves tensile strength compared to fiberglass. A bright orange strand woven into the triple strand aids visibility in low-light conditions. The polypropylene case features an optimized feed angle for smooth payout and retraction. Non-conductive. Weighs 5.9 lb. ## Specifications | Attribute | Value | |---|---| | Product Type | Fish Tape | | Material | polyester | | Tape Width In | 0.25 | | Tape Length Ft | 150 | | Leader Type | nylon | | Non Conductive | Yes | | Overall Length In | 17 | | Weight (lbs) | 5.9 | | Barcode (UPC) | 092644500374 | | Warranty | Lifetime | Source: https://www.jaspecs.com/klein-tools/fish-tape/50376-klein-tools-high-flex-polyester-fish-tape-150-foot/